Hire the best Android App developers

Check out Android App developers with the skills you need for your next job.
Clients rate Android App developers
Rating is 4.8 out of 5.
4.8/5
based on 7,930 client reviews
  • $25 hourly
    Hello, I'm Android (since 2012) and C++ (since 2010) developer. I tend to keep myself up to date with important changes in the Android world and regularly look into new ways of solving things. Always looking for new challenges and opportunities. Good skills: • Android development: - Clean Architecture; - Data storage: Realm, SQLite, SharedPreferences, Internal/External memory; - Sensors, Location and Maps, Geofences, beacons; - Understanding and using guidelines; Material Design; common UI/UX patterns; using support libraries; - Creating applications for multiple screen resolutions/sizes; - Firebase (database, authentication, analytics, notifications, remote config); - Integrations with social networks (facebook, google, twitter, foursquare, vkontakte); - Dealing with REST API; - Signing and publishing applications. Successfully implemented pet-projects on Google Play (2m+ downloads); - Open source libraries: Dagger 2, Retrofit 2, ButterKnife, EventBus, Timber/Hugo, Crashlytics. • C/C++(C++11) (STL, COM, WinAPI, DirectShow, Direct3D 10). Video processing; reverse engineering, hooks; Linux (GCC, make, creating rpm and deb packages); networking (sockets, zeromq + protobuf); multithreading, high load; Basic skills: • C# – desktop applications, tools. • Python (Powershell, bash) – scripts to automate routine tasks. • PHP – simple back-ends, mostly for pet projects. • HTML, CSS, Javascript. Version control: SVN, git.
    vsuc_fltilesrefresh_TrophyIcon Android App Development
    C
    C++
    Android
  • $44 hourly
    Hi. I’m a native Android developer with 7+ years of software development experience. I’m working with modern development stack: Android Jetpack, AndroidX, Coroutines, LiveData, DataBinding, Room, Rx, DI, MVVM, Git, etc. I also have experience in​ using Flutter/Dart to build cross-platform solutions. Some areas in which I have extensive experience: - Media processing (photo, video, audio). - Geolocation. - Integration of third-party API like Facebook, Google, Twitter, Dropbox, Amazon. - Firebase services (FCM, Analytics, Crashlytics, AdMob, etc.). - Machine learning. - In-App Purchase. - Converting Web/IOS apps to Android. - And more… Please feel free to contact me and I'll help you at any stage, from an idea or small app to a full-scale solution. Thanks!
    vsuc_fltilesrefresh_TrophyIcon Android App Development
    Firebase
    Smartphone
    Java
    Android SDK
    Flutter
    Kotlin
    Mobile App Development
    Android
  • $20 hourly
    🌟 Top-Rated Upwork Professional 🧑🏻‍💻 9+ years of experience 📱 Android | Kotlin | Java | Jetpack Compose | Kotlin-Multiplatform| Flutter | WearOS | AndroidTV | 🚀 AI | ChatGPT | 💻 Firebase | VoIP | Linphone With over 9 years of extensive experience as an Android Developer, I specialize in native Android application programming with a strong focus on SCRUM/Agile workflow. 
 
I have a proven track record of delivering high-quality mobile applications in various domains, including:
 * Airline Domain * Banking Domain * Cargo Management Domain * Logistics Domain * Financial Domain * Social Media/Dating Domain with Video/Audio Chats * Location Tracking Domain
 My expertise in mobile development includes:
 * Programming Languages: Java, Kotlin * Architectural Patterns: MVVM, MVP, MVC * Design Patterns, Custom Controls, and REST API integration * Material Design, Mobile UI/UX, and Firebase integration (AdMob, Analytics, A/B testing, etc.) * Jetpack Compose, Jetpack Navigation * Firebase Realtime Database and Storage * Android SDK, NDK, Open Source, Support Libraries * Reactive Programming with rxJava and rxAndroid * Dependency Injection using Dagger, Kodein, and Hilt * Databases: SQLite, Room, Realm, Page * Network Libraries: Retrofit, OkHttp, Volley, ktor * Image Loading Libraries: Picasso, Glide * Crash Reporting and Analytics Tools: Crashlytics, Firebase, Fabric, LeakCanary, Timber * Other Libraries: Gson, AutoValue, JodaTime, AndroidJob, Google Services * Sockets/SignalR * Kiosk Mode * SonarQube code coverage * Kotlin-Multiplatform (One POC)
 * Wear OS & Smartwatch development In addition, I am an expert in the Linphone SDK, a powerful tool for building voice and video communication applications. I have in-depth knowledge of integrating and customising the Linphone SDK to create high-quality, real-time voice and video chat functionalities within Android applications. I am experienced in implementing Linphone's advanced features, including call management, audio/video codecs, encryption, push notifications, and more. Whether you need to develop a VoIP application from scratch or enhance an existing app with Linphone capabilities, I can provide the expertise you require.
 I have integrated various features and technologies into Android applications, including:
 * Beacons integration for proximity-based interactions * Calendar API integration for managing events and schedules * QR Code integration for scanning and processing QR codes * OCR (Optical Character Recognition) integration for text recognition and extraction
 For multimedia capabilities, I have integrated Video Chat using WebRTC, Twilio, and Agora, as well as Audio Streaming. I am familiar with ExoPlayer for HLS Video Streaming (HTTP Video Streaming), RTSP Video Streaming, and DASH Video Streaming.
 Other skills and features I offer include Custom Calendar development, Media Gallery implementation, Background Download and Upload functionality, Tiff file format handling in Android, Live Streaming using Agora SDK, Deep Linking, LeakCanary for memory leak detection, and code annotations to improve the linting process.
 Experienced Kotlin Multiplatform Developer with a track record of delivering efficient cross-platform solutions. Proficient in Kotlin Multiplatform Mobile (KMM) and skilled in creating high-performance apps for Android, iOS, web, and more. Experienced Jetpack Compose Developer, proficient in creating dynamic, interactive, and modern Android UIs. Skilled in leveraging Jetpack Compose's power to build visually stunning and responsive applications. - Experience migrating target api level 33 - Update existing app I am fluent in English and passionate about Android development. Please feel free to reach out to me with any Android-related questions or projects. I would be pleased to help you bring your ideas to life.
    vsuc_fltilesrefresh_TrophyIcon Android App Development
    User Profile Creation
    User Authentication
    Payment Functionality
    Social Media Account Integration
    Wear OS
    In-App Purchases
    VoIP
    NFC
    Firebase
    Firebase Realtime Database
    Push Notifications
    API Integration
    Bluetooth
    Android
    Map Integration
    Java
    Location-Based Service
    Kotlin
  • $40 hourly
    I have a passion for taking the web and making it mobile. Over last 10 years I got mobile development experience in a broad range of industries, including social gaming, education, sports entertainment, dating, restaurant management and rental solutions. I have solid understanding of full mobile and software development life cycles, UIX, web analytics, changing web standards, and Agile methodologies. Dedicated to continuously developing, implementing, and adopting new technologies to maximize development efficiency and produce innovative applications.
    vsuc_fltilesrefresh_TrophyIcon Android App Development
    Google Maps API
    CSS
    Git
    SQL
    GPS
    Android SDK
    Smartphone
    Android
    Kotlin
    Java
    User Authentication
  • $105 hourly
    ** HubSpot Design Certified ** Recently recognized as a HubSpot Champion User Worked on many different types of applications and with many different technologies. Quickly learn new programming languages and technologies. Can also read and understand existing code to find and fix bugs. Have 26 years experience in IT. Have a Bachelors Degree in Math as well as an MBA. I have worked with many programming languages including COBOL, Visual Basic, C, C++ and Java. Currently working on projects utilizing Angular, JQuery, Java Script, CSS, HTML5, Hubspot and Flex. I am familiar with content management systems. I have worked on front end designs/pages and back end services. Have done responsive development, desktop applications, and mobile applications.
    vsuc_fltilesrefresh_TrophyIcon Android App Development
    CSS
    HTML
    Content Management System
    HubSpot
    CMS Development
    Website Customization
    Agile Software Development
    Blog Development
    Inbound Marketing
    Templates
    iOS Development
    Business with 100-999 Employees
    JavaScript
    Java
  • $60 hourly
    💻 I've been creating software for Android OS since 2017. 🚀 Developed over 30+ projects for millions of users. 🌎 Have experience with international teams and customers from Great Britain, the Republic of Zimbabwe, the USA, Russia, Ukraine, Romania and others. Can help you: 🔹Create an Android application from scratch 🔹Optimise your existing android application 🔹Choose the most reliable and convenient technology stack and architecture for your application 🔹Provide quality estimation of a task 🔹Find and resolve issues of your android application and implement new features 🔹Interview candidates on Android developer position into your team 🔹Grow your business via high-quality application I have experience in projects: 🔸E-commerce, social, communication projects 🔸Internet banking applications 🔸Telecommunications 🔸Cryptocurrency 🔸Media player 🔸Device hardware (Bluetooth, GPS, Accelerometer, Camera, etc.) 👋Do not hesitate to contact me If you need any further information 👋
    vsuc_fltilesrefresh_TrophyIcon Android App Development
    Model View Presenter
    Model View ViewModel
    RxJava
    Dagger 2
    Android Room Persistence
    Firebase
    Agile Software Development
    Multithreaded Programming
    Material Design
    solidThinking Envision
    Clean Architecture
    Android SDK
    Kotlin
    Java
  • $17 hourly
    I have the experience and expertise in delivering high performance mobile applications on platforms including iPhone / iPad and Android / Tablet. I usually work on popular mobile platforms including iOS 5, 6 and Android which runs from iPhone 3GS, iPhone 4, iPhone 4S and iPhone 5 as well. With a deep understanding of the core technologies driving iOS and Android platform, I can quickly find solutions to engineering challenges and deliver superior mobile apps to clients on time and on budget. My depth of experience and results-oriented, no-nonsense approach to product development dramatically decrease the time needed to propel an idea from inception to highly polished app. Also with a team of specialists, we have the design and development expertise to transform your ideas into stunning Mobile experiences. Major development platforms: - iOS ( iOS 6.0, iOS 5.1, iOS 5.0, iOS 4.3, iOS 4.0 ) - Android ( Android 2.1, Android 2.3, Android 4.0 ) Mobile Devices I have: - iPhone - iPad # iPhone 3GS (iOS 4.0) # iPad 3rd Generation (iOS 6.0) # iPhone 4G (iOS 5.1) # iPad 2 (iOS 5.1) # iPhone 4GS (iOS 6.0) - Android # Samsung Galaxy S II (Android 4.0) # Nexus One (Android 2.3.6) # Samsung Galaxy Tab (Android 3.1) # Samsung Galaxy S (Android 2.1) Core Skills and Experiences # iPhone/iPod/iPad, Android, Titanium, Phonegap # Web Service, Ajax, XML, JSON, RSS, SOAP, WSDL # iPhone/Android Video/Audio Streaming, Video Editing, Decoding/Encoding # MySQL, SQLite on iOS and Android, HTML5, PHP, JSP # Social Integration with Facebook, Twitter and Google Plus on iOS and Android # Google Map Service, Foursquare # Flurry, Testflight, Google Analystics on iOS and Android # CoreData, CoreGraphics, Animation # Cocos2D, OpenGL, Corona, Unity3D # Box2D, Chipmunk # Game Center, In-App Purchase, Multiplayer Game # iAd, Adwirl, Admob, Chartboost, TapJoy, Cerebro Contact me with any idea or problem of your projects such as the problem of quality, deadline, compatible and so on, even budget. ;-) Just tell me your wish. I'm open to help you with those things and can give you the crucial solutions. I'd love to hear about your cool ideas. Thank you.
    vsuc_fltilesrefresh_TrophyIcon Android App Development
    JavaScript
    HTML5
    Objective-C
    iPhone App Development
  • $10 hourly
    Hello my profile visitors, Thank you so much for looking into my profile. Whether you are a 𝗦𝘁𝗮𝗿𝘁𝘂𝗽, 𝗘𝘀𝘁𝗮𝗯𝗹𝗶𝘀𝗵𝗲𝗱 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗼𝗿 𝗹𝗼𝗼𝗸𝗶𝗻𝗴 𝗳𝗼𝗿 𝗠𝗩𝗣, you will get 𝗛𝗶𝗴𝗵-𝗤𝘂𝗮𝗹𝗶𝘁𝘆 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 at an 𝗔𝗳𝗳𝗼𝗿𝗱𝗮𝗯𝗹𝗲 𝗖𝗼𝘀𝘁, 𝗚𝘂𝗮𝗿𝗮𝗻𝘁𝗲𝗲𝗱. Interested? Just click on the '𝗜𝗻𝘃𝗶𝘁𝗲 𝘁𝗼 𝗝𝗼𝗯' button and let us discuss about your project and your vision. 🔹 During the last 11+ years, I have developed many different types of apps and website. Food delivery app and website On-demand services Salon app and website Beauty app and website Taxi booking app and website Car rental app and website E-commerce app and website Health and fitness app Travel app Music streaming app Video streaming app Fintech app Telemedicine app Finance app Real estate app and website Social media app Chat app Business app and website Dating app and website Online education app and website Tutor app Hotel Booking app and website Flight booking app and website Online grocery ordering app and website There are many more apps and websites I have worked on in the past. 🔹 My core skills and experiences: ➔ Interaction with backend - Rest API, JSON, XML, PHP, Node.js, Python ➔ Databases / Data Management - SQLite, MySQL, Parse, MongoDB ➔ Social Integration - Facebook, Twitter, Youtube, Instagram, Snapchat, Tinder ➔ Chat - XMPP, Socket, Firebase, GetStream, Twilio ➔ Version Control Tools - Github, Bitbucket, Gitlab ➔ Google Map, Apple Map kit, Geolocation, GPS, Location Tracking ➔ Audio / Video Live Streaming ➔ Firebase APIs ➔ Paypal, Braintree, Stripe Payment Gateway ➔ QR Codes, Bar Codes, VIN Scanner, NFC Tags Reading ➔ In-App Purchase, Advertisement, Push Notifications, GCM, Google Analytics ➔ Photo & Video Sharing, Editor, Filter 🔹 I work with the below technologies for development: 𝗔𝗻𝗱𝗿𝗼𝗶𝗱: Kotlin, Java, Android Studio, Android SDK 𝗶𝗢𝗦: Swift, SwiftUI, Objective-C, Xcode, iOS SDK 𝗖𝗿𝗼𝘀𝘀-𝗽𝗹𝗮𝘁𝗳𝗼𝗿𝗺 (𝗛𝘆𝗯𝗿𝗶𝗱): Flutter, React Native, Ionic 𝗪𝗲𝗯 / 𝗕𝗮𝗰𝗸𝗲𝗻𝗱: PHP, Node.js, Python, Laravel, WordPress, Express.js, Nest,js, Django 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱: React.Js, HTML5, CSS3, BootStrap, JavaScript, jQuery 🔹 Why you should hire me? ✔ I always work towards your success ✔ Quality work at affordable prices ✔ Strong Android, iPhone, and backend architecture and database knowledge ✔ Develop applications that support all devices ✔ Delivering product on/before time ✔ Always up-to-date with the latest technologies Let us connect, discuss and convert your idea to an amazing solution that becomes the part the part of your success.
    vsuc_fltilesrefresh_TrophyIcon Android App Development
    Web Development
    PHP
    Laravel
    Python
    Django
    Android
    iOS
    GPS
    Geolocation
    Payment Gateway Integration
    Firebase
    Kotlin
    Swift
    SwiftUI
    In-App Purchases
  • $200 hourly
    I am a full stack and hybrid mobile app developer with experience building complex responsive web apps, websites and mobile applications. My work has involved using: - Angular - Javascript/Typescript - NodeJS - HTML5 - CSS/SCSS - PHP - JQuery and working with Front-end and backend frameworks such as: - Ionic 2+ - Express - Slim PHP - Vue JS - Stencil JS and integrating NoSQL and SQL databases. I also have advanced knowledge of Git and its integration with Continuous integration and deployment. Testing has become a key component in my development work and I seek to ensure that all projects utilize integration and unit testing. My main interest lies in working with healthcare apps and services as this enables me to utilize my experience and expertise as a physician. However, I have learnt to appreciate the wisdom that can be garnered while working in other sectors and as such I am open to exploring any opportunity that will expand my boundaries and enable me to develop new skills and meet new awesome people.
    vsuc_fltilesrefresh_TrophyIcon Android App Development
    AngularJS
    iOS Development
    Ionic Framework
    PHP
    Android
    iOS
    WordPress
    CSS 3
    HTML5
    Flutter
    CI/CD
    Angular
    TypeScript
    JavaScript
  • $60 hourly
    I'm a software developer with two and a half years of experience here on Upwork. With 20+ jobs and over 10,000 hours of work behind me here on upwork I learned a lot about what it takes to make great apps. I have created numerous tools and boilerplates to assist me in my business, which allow me to implement common features much faster. I have experience in all aspects of mobile app development. I'm well organized, passionate, honest, and I love my job. My English is fluent and I'm always available online. I work 7 days a week.
    vsuc_fltilesrefresh_TrophyIcon Android App Development
    Android
    User Interface Design
    User Experience Design
    SQL
    Android SDK
    Git
    Kotlin
    Java
  • $75 hourly
    I'm a Top Rated native Android developer (9+ years of experience) and a fluent English speaker. My strong point is in creating and maintaining complex Android apps from an idea to publishing in the stores. Skills and technologies which I'm an expert at: — Kotlin/Java — Android SDK, Android Studio — Git — MVP/MVVM/MVI — RxJava/Coroutines for asynchronous operations — Dagger2/Hilt for Dependency Injection — Retrofit/OkHttp for Rest API — Sqlite/Room for Database management — Firebase/Firestore: real-time database, authentication, notifications and crash reporting — OOP/SOLID/DRY I have 8k+ hours of work at Upwork and experience in a broad variety of apps, which I hope you'll find useful in your next project.
    vsuc_fltilesrefresh_TrophyIcon Android App Development
    Android App
    SQL
    Git
    Android SDK
    English
    Smartphone
    Mobile App Development
    Gradle
    Android Studio
    Dart
    Flutter
    Java
    Kotlin
    Android
  • $55 hourly
    I have been freelancing for two years, and have a 100% client satisfaction rate over a variety of complex projects. My speciality is MIDI and audio with native code, but I am also adept at generic Android client work, and can churn out screens at an impressive rate! I have written the most fully featured and music notation app for Android singlehandedly, as well as Forex trading tools, a Midi to MP3 converter, a band management system, forum browsing software and a discussion game for a charity. I have 14 years commercial experience in C/Linux. I adhere to sound software design principals (SOLID, TDD, Clean Architecture). I can learn any new framework extremely quickly, and am up-to-date with the latest Android components and patterns (Jetpack, MVVM, MVI).
    vsuc_fltilesrefresh_TrophyIcon Android App Development
    Mobile App Development
    Kotlin
    Tablet
    Native App Development
    Android SDK
    Android Studio
    Android Room Persistence
    Android
  • $28 hourly
    Hi, I am an experienced and friendly programmer who loves working with clients who have a goal in mind and need me to achieve it. I have proven knack for designing and developing efficient, high-performance and user-friendly Android mobile applications. My core competency lies in complete end-end management of a new mobile application development project and I am seeking opportunities to build mobile application from the ground up for you or your business. I carry quality experience and expertise in the following technologies: Android native development: Java and Kotlin Hybrid mobile app development: Flutter / Dart and React native (React.JS, VS code, Redux, Expo) Database Management: SQLite, Firebase Android studio and Android SDK Push Notifications Geo Location/GPS/Travel APP Web Service Integration In-App Purchase, Payment gateway integration (Stripe, Braintree, P-a-yPal, etc.) Social Integration (Facebook, Twitter, Google+) Photo capture | edit | filter | caption | Share Apps Sharing via Youtube, Facebook, Twitter, Instagram, Flickr, Email and SMS integration If you want qualitative work, timely delivery, long term engagement then I am the person for whom you are looking for. I am always looking for new challenges and opportunities, I’m here to bring your ideas and vision to life! If you feel, I may deem fit into all your desired skills I am available to start right away on your project.
    vsuc_fltilesrefresh_TrophyIcon Android App Development
    In-App Purchases
    Stripe
    Video Stream
    Firebase
    Mobile App Development
    Flutter
    Stripe
    PayPal Integration
    JSON
    Google Maps API
    React Native
    Kotlin
    Android SDK
  • $50 hourly
    Self-taught software developer with more than 6 years of professional experience. Mostly worked on mobile application projects using Java/Kotlin and Swift programming languages. Experiences also include creating REST APIs, working with database technologies, providing Cybersecurity consultancy, end-to-end Mac and Windows Application development and UI/UX Design using Adobe Tools. Subjects of Interest Native Mobile Application Development, Cybersecurity, Software Design Patterns & Architecture, Financial Technologies, Game Development.
    vsuc_fltilesrefresh_TrophyIcon Android App Development
    RxJava
    iOS Development
    Android SDK
    Firebase
    iOS SDK
    Camera
    API Integration
    iOS
    Native App Development
    Android
    Swift
    Kotlin
    Java
  • $90 hourly
    iOS & Android Mobile Apps / Website Design & Development Professional and skilled in design and development, bringing your ideas to market: *Food/Retail Delivery, Pickup Platform for Drivers, Staff and Customers; *Social Networks for Friends/Groups with Chat, Feeds, Profiles, Signup and Login; *Yelp-like Geolocation Services; *Buy and Sell Marketplaces with Commissions and Payments; *Task Management, Expense Management and more. iOS, Android apps and websites that are user-friendly and easy to maintain. You can count on me to communicate with regular updates and be available on short notice. Attention to project details include following best practices and guidelines for design (Material Design), testing and bug fixes, creative solutions and clean code. Why am I a good fit for you? I own Tiny Screen Labs, located in the Chicago area. We provide full stack development for mobile apps and websites. I have a growing portfolio of apps for startups, businesses, nonprofits and creatives. I handle the design, development and publishing of your apps. After the apps are launched, we provide updates and support. Please contact me about your project and get a fixed price proposal
    vsuc_fltilesrefresh_TrophyIcon Android App Development
    iOS Development
    WordPress Plugin
  • $20 hourly
    I have 14 years of software development experience overall. • Motivated and reliable Android Developer with an excellent work ethic and programming language knowledge base • Able to build applications from concept to final product to the client's or project's specifications • Experienced in object-oriented programming; development, testing, and debugging code; design UI • Able to work well independently or as part of a professional development team in order to meet and achieve project goals I have experience with: - Java - Kotlin - Android SDK - Android architecture components - Google Play Services - Firebase, Parse, Backendless, Cloudinary SDKs - Retrofit - RxJava 2 - Dagger 2 - MVP, MVC, MVVM - Testing - UI design with Material Design - Social media integration (Twitter, Facebook, Google plus, VK) - Git
    vsuc_fltilesrefresh_TrophyIcon Android App Development
    Tablet
    Smartphone
    Mobile App Development
    Dagger 2
    Firebase
    Kotlin
    Google Apps
    JSON
    REST
    Java
    Android SDK
    Android
  • $18 hourly
    Expert in developing frontend and backend based mobile apps and website with over a decade of experience in delivering high-quality end to end value-driven mobile apps. Seasoned with latest & path-breaking technologies like iOS, Android, Microsoft, PHP Angular .NET, Cloud Computing (Salesforce) & Open Source Software to deliver cost-efficient & high-quality solutions to cater to the needs of customers across the globe. As a developer I've also worked on all type development projects for smartphones as well, to nurture my skills of working with high resolution based requirements of the clients. I've worked with people from the US, Europe, Australia etc.
    vsuc_fltilesrefresh_TrophyIcon Android App Development
    Android
    iOS Development
    Mobile UI Design
  • $48 hourly
    I started in mobile development before the invention of the iPhone in a mom-and-pop games company creating the first multiplayer cellphone games for Qualcomm's BREW platform in C and C++. Since then, I've done freelance and speculative work in many languages, especially Java and Kotlin, and created a few apps which can be seen on my app store page, demonstrating the use of Amazon Web Services S3, Lambda, and Cognito integration; TextToSpeech and SoundPool/MediaPlayer resources; and a custom and user-customizable InputMethodService (built-in keyboard), among other things. (See my Google Play store linked below.) I'm seeking jobs to make use of and expand my experience in Kotlin, Android, and AWS and to this purpose I am happy to dive into existing code to solve bugs and insert new functionality, in addition to from-scratch development. Recent and Current Projects: IoT Bluetooth Display and Relay - Android App in Kotlin for phone/tablet and wearable Real-time control, calibration, processing, display, relay, and recording/playback of multiple remote sensors of various types in custom groupings and sessions. Maintaining bluetooth connection through out-of-range and device interruptions. WeeGee - Android App in Kotlin, Amazon Polly, under development Experimental alternative communication system in which touch interaction over custom dynamic menus builds strings of phonemes spoken aloud by the device's text-to-speech engine or Amazon's Polly service. DecodeTheNews - Android App in Kotlin, Amazon S3 and Lambda, released in October 2018 Challenging cryptogram game presenting current or historical headlines rather than quotes and a sophisticated interface. ImageKeyboard - Android App with InputMethodService, released February 2019 For users of icon-based alternative or augmentative communication, this app converts a directory tree of named images into a paged keyboard that can be set to replace the native Android keyboard in any text-input context. Insert and delete whole words, making text editing easier. Customizable preferences include grid size, highlight, trail, and other feedback behavior, touch sensitivity, and page navigation options. Retains several custom keyboards for easy context-swapping. GridMaker - Javascript Chrome App/Electron, under development as an Android module In support of the ImageKeyboard app, this program automatically parses icon grid images into a directories of named icon images, using OCR where possible. ChooseBook - Android App with Amazon S3, released in June 2018 Choose-your-own-adventure style ebook reader for young kids with zoom-and-pannable pictures, text-to-speech reader, and links between pages for easy navigation. A Javascript web page helps organize text, pagelinks, and images for each book in JSON files stored in Amazon S3. The app can browse available titles and download selected books, to view immediately or store on device for offline use. DecodeTheNews - Web Game, released 2015 Javascript/PHP application which finds and encrypts current headlines, storing them along with letter frequencies, a list of unique words, and other statistics for use by the cryptogram-style game. Visual tools in the game, including a pattern-matching dictionary, help players solve the cryptogram. A timer and leaderboard add suspense. Users can create an account or track their game history through a unique ID based on ip and computer configuration. Past Projects: RylaCampbell.com - Wordpress site with custom photo gallery with thumbnail navigation Songtunnel.com - PHP/MySQL Web Page, released 2007 A lyrics search site which grabbed and indexed song lyrics from other websites and enabled an advanced text/artist/album search. Matching songs are sorted by relevance with title, artist, album, year, and lyric snippet, as well as links to the Amazon media sample and "Buy now" referral link if available. Multiplayer Snake - C++/BREW Mobile app with Java, released 2005 The first true live-action multiplayer game on this platform. Developed to show off Entelepon's seamless networking layer. In offline and low-population games, non-player-controlled snakes using path-finding and goal-balancing algorithms fill in for other players with different levels of difficulty. Multiplayer Tank - C++/BREW Mobile app with Java, released 2004 The first turn-based multiplayer game on this platform where both player's actions were graphically represented in real time on the game-board. First use of Entelepon's UDP messaging layer. Offline play was available, against an AI using path-finding and cost/benefit strategies to simulate an intelligent opponent. Players could be matched at random or from a group of users within a custom "channel". Pre-coded taunts added a bit of social interaction. Dozens of game maps and random tank-fleet configurations made each game unique.
    vsuc_fltilesrefresh_TrophyIcon Android App Development
    Bluetooth
    JavaScript
    MySQL Programming
    Java
    Amazon Cognito
    Amazon Polly
    Amazon S3
    Kotlin
    Android
  • $70 hourly
    I have been developing apps for mobile devices since 2012. In that time I have collected a number of tools and skills to improve both development speed and quality in the apps I create. My passion is improving user experience - developing apps which users will enjoy interacting with. This includes UI design, animated content, polished transitions, etc. With many apps requiring online services I am also well versed in various server-side technologies for user authentication, databases, analytics, and much more. Previous clients have been impressed by my excellent communication skills and ability to work consistently with little to no supervision. Please take a look at my portfolio and client reviews to see previous work and evidence of my work ethic.
    vsuc_fltilesrefresh_TrophyIcon Android App Development
    iPhone App Development
    iPad App Development
    iOS Development
    Apple Xcode
    Android
    Android Studio
  • $55 hourly
    Strong programming foundation with extensive knowledge on Data Structures, Design Patterns and State Machines. I can say I dedicated most of my skillset around mobile development, which started out with Java for Android Development and has now branched into React Native and Flutter for cross platform mobile developer. Also having both worked and managed remote teams, I'm more than glad into taking up leadership and mentoring roles to assist you with your team.
    vsuc_fltilesrefresh_TrophyIcon Android App Development
    Vert.x
    XMPP
    Clean Architecture
    Node.js
    React
    React Native
    Kotlin
    Java
  • $20 hourly
    I have a substantial learning curve that allows me to continue other developer jobs or unfinished projects.  Familiar with backend Api using firebase or JSON REST API. Experienced worked both individually or in a team using Jira, Notion, CI/CD tools, and Github. Feature Developed in Flutter (Using various state management bloc, provider, stacked): 1. Data stream integrations from firebase using auth, functions, configs, firestore, and storage 2. Stripe Payment integrations (CC, grabpay) 3. Popular Indonesia payment gateway (midtrans to support gopay/shopee) 4. Chat Feature 5. Online Shopping Feature 6. Social media feature (comments, like share, follow) 7. Twillio chat and video room 8. Geolocation and map feature 9. Image manipulation 10. Real-time chat and voice using the agora 11. In APP purchase I have developed some production Apps. You can see my work detail in the portfolio.
    vsuc_fltilesrefresh_TrophyIcon Android App Development
    iOS Development
    Mobile App Development
    In-App Purchases
    User Authentication
    Android
    Agile Software Development
    RESTful API
    Firebase
    Hybrid App Development
    Dart
    jQuery
    JavaScript
    CSS
    Flutter
  • $65 hourly
    A dedicated VPN developer with 6+ years of experience in the VPN industry. Providing VPN solutions for Android, iOS, macOS, Windows, and other major operating systems, along with protocol expertise in OpenConnect, OpenVPN, WireGuard, & Shadowsocks. ✅ Top-Rated Plus Upwork Contractor ✅ 100%+ Job Success Rating ✅ 90% Above Re-hire Rate ✅ VPN app Development. Open Connect, Open VPN, Wireguard, Shadowsocks ✅ iOS, Android, Windows, Mac, TV, Browser, Router ✅ iOS & Android Native and Cross-platform App Development ✅ Fullstack Web App Development (Laravel - PHP - MySQL) ✅ VoIP app Development. Opensource and Private SDK ✅ Website Development Mobile Application development: - Objective C, Swift - Java - Cross-Platform (ionic) Web Application development: - Laravel Framework - Codeigniter Framework - Wordpress - MySQL Website Development: - Wordpress VOIP Technology Expertise: - Open source PJSIP for VOIP client Application [Softphone] - Open source Asterisk for VOIP server Application [Billing Software] - Open source Kamailio for SIP Proxy - XMPP, Jabber, and Openfire for Instant Messaging App - OTT app development experience VPN Technology Expertise: - Open VPN (Android and iOS) - Open Connect (Android and iOS) - Wireguard, Shadowsocks (Android and iOS) Custom Project Development Experiences: - VPN Client APP & Admin/Management Portal - Mobile Dialer / Softphone - Billing Software for Softswitch - Instant Messaging Software - Live Chat Application - Hospital Management System
    vsuc_fltilesrefresh_TrophyIcon Android App Development
    VPN
    Android
    Vue.js
    PHP
    Objective-C
    Laravel
    SQL
    iOS Development
  • $40 hourly
    Thank you for visiting my profile I have 8 years of experience building mobile applications for multinational and startup companies, including collaborating directly with the CTO to help build top-notch applications that will play a crucial part in their business. Most of my work is outside of Upwork, but now I am focusing on finding more awesome clients to work with by using this great platform. I'm primarily pursuing working with startups and medium-sized businesses and helping them by offering my 8 years of expertise in mobile app development. But individual clients are also welcome. So if you are interested in collaborating to build an excellent mobile app with a great user experience, Just ping me. What are you waiting for? Areas of Expertise: ♦ Android Native Development ♦ iOS Native Development ♦ React Native Development ♦ Flutter Development
    vsuc_fltilesrefresh_TrophyIcon Android App Development
    JetPack
    Dart
    Flutter
    Kotlin
    JavaScript
    Java
    Swift
    Mobile App Development
    React Native
    iOS Development
    Android
  • $12 hourly
    📅 8 Years of Android and iOS development and Real Estate Experience ⏰ Successfully Completed 22650+ Hours of Work 💼 Accomplished 100+ Jobs to Date ☑️ Maintained a Perfect 100% Customer Satisfaction Rate ⭐ Achieved a Flawless 100% Job Success Rate 🌟 Top Rated, top 3% of talent on Upwork. 🌏 Proficient in Working Flexible Hours to Accommodate Client Timezones. My Android and iOS development specialties are: - Android and iOS Applications Development - Rest API - MVC, MVP and MVVM - Version control tools: Git, GitHub, Bitbucket - Google Maps API, Facebook API, Payment API - Kotlin, Java, Swift - Area's of apps already developed Financial, Social Media, Communication, Matrimonial, Image and Video Editing, Streaming My Real Estate Services specialties are: - Expert in Real Estate Advertising and Researching - Virtual Assistance including Rental Housing Leads - Knowledge of Proper Wholesale Real estate work - Getting Sellers, Buyer Leads through Many Sources. - I Have Experience of Working With Investor, Agents/Realtor In Many Different States Of USA - Expert in Finding Motivated sellers, Buyers and follow up with them to generate leads for investors. I have Ability To work Anytime, I Have Free Messaging And Calling Tools To USA And Canada where I can communicate or interact with the Clients Easily. I am looking for challenging work so its helpful to grow me and also to the Organization which I am looking for.... Contact me 24/7 I always trying my 100% best to improve my skills and provide the quality and accuracy I have shown in the past with other companies.
    vsuc_fltilesrefresh_TrophyIcon Android App Development
    RESTful API
    Digital Marketing
    Virtual Assistance
    Next.js
    Lead Generation
    Real Estate
    Real Estate Marketing
    iOS
    JavaScript
    Swift
    iOS Development
    Kotlin
    Mobile App Development
    React Native
  • $25 hourly
    My expertise have helped businesses, startups, and clients from different countries to get the best quality applications that are highly scalable and competitive. 🥇 Top Rated Full Stack Mobile and Web Application Developer. My clients are happy and satisfied with the work quality that I promise in the following categories: ● E-commerce ● E-Wallets ● Fintech ● Sass Based Software ● Maps & Navigation ● Payment Gateway Integration ..and many more Empowering Your Business with Cutting-Edge Mobile & Web Apps - Connect with a Skilled and Reliable Developer with 5+ Years of Experience and I cannot help everybody but we can be a great fit if you are looking for ● A reliable asset for your idea that understands the business and market ● You want a resource to take ownership of your project ● High-quality products ● Highly scalable mobile applications ● Best designs and market competitive practices ● You had a not-so-good experience with the previous developer/team Working with me you will ★ Stop worrying about the implementation of your idea ★ Put your best foot forward in the mobile application field ★ Get deadlines meet proactively ★ Clear insight through the journey of the end-to-end development and deployment of your project ★ Work with a full stack senior resource that is deeply committed and passionate about big ideas ★ Get your idea live in the market with less time to market. My clients have to say a lot about me: ✅ Timeous, Reliable, Honest, Productive, and a great team player ✅ Arslan is definitely more than just a mobile app developer. I appreciate his professionalism and honesty as he guided me throughout the task and implemented the requirements better than my expectation ✅ It was a pleasure working with Arslan as he is Proactive Hardworking and professional with complete knowledge about development He delivered quality products and completed tasks before the deadline. What I look for in a new client: ● Open mind, relaxed attitude ● Values integrity & relationships ● Focused on improving, lets their actions speak louder than words ● Knows the minimum scope, and wants the BEST Not every business is my client, though. Some signs we might not be a good fit include: ✗ The company is struggling to find the right resource for their role - can’t do that in good conscience ✗ Need a resource that understands the market and follows market competitive solutions with high quality ✗ ”Respect for others” is not a core value - we love working with awesome people we respect ✗ Looking for a developer that takes ownership of the work and idealogy of the company 🔢 My stats: ● Top Rated Plus Full Stack Application Developer. ● 5+ years of experience (JAVA, KOTLIN, SWIFTUI, MVVM, NODEJS, MongoDB, Firebase) ● 1.3 K hours on Upwork ● Worked with large-scale companies I am: 🏆 Certified Freelancer 🏆 Certified Mobile Application Developer 🏆 Bachelor Of Software Engineering. 🏆 Masters Of Software Engineering. ( In Progress ) I have more than 5 years of real-time business-oriented experience in the field of Android, iOS, Node.js, MongoDB, Firebase, MySql application development, and designing and managing teams. I have developed mobile applications using the latest technologies and frameworks in the latest languages with a proven track record. Experience in: ✓ Software Requirement Engineering ✓ Software Design And Analysis ✓ Architectural Components ✓ Kotlin Compose ✓ AWS ✓ Firebase ✓ Google Cloud ✓ Chat GPT 1) My Core Field Is Mobile App Development following KOTLIN / SWIFT UI 2) Services Description 2.1) Programming languages include a) JAVA b) KOTLIN c) SWIFT UI d) PYTHON. 2.2) Frame Work Include: a) NodeJs b) Django 2.3) Databases Include: a) MYSQL b) Firebase c) MongoDB d) Sqlite / Room 3) Others: a) Dependency Injection. b) MVVM. c) Product Requirement Engineering. d) Product Maintenance Lastly, I take great pride in my prompt and professional communication. Let me know if you have any questions, I would love to discuss the job with you further and hope to hear from you soon.
    vsuc_fltilesrefresh_TrophyIcon Android App Development
    Android Developer
    Flutter Developer
    Payment Gateway Integration
    Full-Stack Development
    Android App
    Hybrid App Development
    Native App Development
    Java
    Python
    Android
    Kotlin
    Swift
    Mobile App Development
    React Native
  • $25 hourly
    I not only Develop Mobile Apps, But I engineer them, with pixel-perfect UI & Functionality from development to deployment, in a fair timeline. I can also help you identify the technical requirements for your idea. Why Hire Me? ✅ I can help you identify & shortlist the requirements. ✅ Regular Updates and Demos. ✅ I take guarantee of my work and I never compromise the quality of work. ✅ I'm always available for any issue & bug solution, even after launching the app. ✅ Minimum turnaround time. ✅ I write Cleaner, testable, readable, and expandable code. ✅ I always focus on smooth and effective UI with transitions, animations, and best loading practices. I value your time, money, and most importantly your idea. With my solution-oriented work techniques, I focus on high-quality implementation with best practices such as Kotlin, MVP, MVVM, Clean Architecture, and Solid Principles. I'm developing Android Apps for various business solutions for 5+ Years. I have developed more than 100+ Apps, Used by millions of users worldwide. I have worked on projects of all types of complexities and delivered excellent solutions for various industries, such as Restaurants, Retail Businesses, Education, Healthcare, etc. 💡 Stack: 📌 Test-Driven Development & Agile Methodology 📌 Kotlin 📌 Clean Architecture , MVVM ,HILT,Unit & Ui Testing,Jetpack 📌 Expertise in Firebase Real-Time DB, CloudStore DB, Room DB, SQLite, Realm DB & MongoDB Realm Sync. 📌 Highly experienced in Point of Sale apps development for Android PDA, Kiosk, and tablets. 📌 Expertise in Animations & Transitions 📌 Navigation Components 📌 Jetpack Compose 📌 LiveData, Kotlin Coroutines, Flows 📌 Material Design Components 📌 Payment Gateway Integrations 📌 Jira,Trello,Asana,Slack 📌 Ad Integrations such as Admob,FAN(Facebook Audience Network),Unity Ads etc.
    vsuc_fltilesrefresh_TrophyIcon Android App Development
    Agile Software Development
    Jira
    Point of Sale & Payment Systems
    Realm Database
    Clean Architecture
    Google Maps API
    Firebase
    User Authentication
    Kotlin
    Android NDK
    Android Studio
    Android SDK
    Mobile App Development
    Android
  • $40 hourly
    🌟 Embark on a Digital Odyssey with Me: With over six years of IT industry experience, I'm here to infuse every moment into driving results for you. 🚀 Your Satisfaction, My Pledge: Your ultimate satisfaction is my unwavering commitment; I won't rest until you're thrilled with the outcomes. 🎨 Crafting Dreams into Reality: I bring your vision to life with a meticulous touch, forging an unforgettable digital experience. 💼 Proven Track Record: Thrilling over 100 clients across various technologies, I possess the expertise to transform your project into a success story. 🤝 Reliable Collaboration: I'm your dependable partner, always ready to discuss and refine strategies. What You'll Gain from Collaborating with Me: ✅ Custom React Native Mobile App Development ✅ Multi-User React Native Mobile App Development ✅ GPS-Based React Native Mobile App Development ✅ Health Services React Native Mobile App Development ✅ Uber Clone React Native Mobile App Development ✅ Education Industry Mobile App Development ✅ Retail Industry Mobile App Development ✅ Worker and Jobs Management Mobile App Development ✅ Custom Flutter Mobile App Development ✅ Mobile App Development with Firebase Backend ✅ Mobile App Development with Custom Backend (Node.js, Laravel, Java, Django, and .NET) ✅ Native Android Mobile App Development with Java ✅ Native Android Mobile App Development with KOTLIN ✅ Native iOS Mobile App Development with Objective C ✅ Native iOS Mobile App Development with Swift ✅ React Native Mobile App Development for Various Industries Cutting-Edge Skills and Tools for Your Project: ✨ Frontend Expertise - Swift, Objective C, Kotlin, Java, Dart, and JavaScript. ✨ Backend Brilliance - API design to server-side languages like PHP, Python, and more. ✨ Design Mastery - Tools like Figma, Photoshop, Illustrator, Adobe XD, and more. ✨ Complete Solution - Covering UI/UX, branding, wireframing, prototyping, and more. 🚀 Ready to Elevate Your Project? Click the inviting green "Hire me" button above, and let's embark on a journey that will revolutionize your app and delight your users. Expect More. Deliver More. Let's make it happen together! Thank you for considering my expertise.
    vsuc_fltilesrefresh_TrophyIcon Android App Development
    Shopify
    Redux
    Mobile App Development
    React Native
    Mobile App
    WordPress
    PHP
    Node.js
    MongoDB
    JavaScript
    TypeScript
    React
    Web Application
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How to Hire Top Android Developers

How to hire Android developers

Android is the world’s most popular mobile operating system (OS). Whether you’re trying to create an Android app from scratch, or port an existing iOS app to Android, an Android developer can help bring your mobile project to life.

So how do you find an Android developer? What follows are some tips for finding top Android developers on Upwork.

How to shortlist Android developers

As you’re browsing available Android development consultants, it can be helpful to develop a shortlist of the freelancers you may want to interview. You can screen profiles on criteria such as:

  • Expertise. If your app requires expertise in GPU programming, game design, or accelerometer control, you’ll want to find a specialist.
  • Past work. Good code is well documented, some developers showcase their past projects or provide presentations highlighting their achievements on their profiles.
  • Feedback. If you’re wondering what it’s like to work with a particular Android developer, past reviews are a good place to look.

The trick to finding top Android developers is to identify your needs. Is this app intended to be used as a secure user account portal? Will the app need to incorporate any unique features, such as scanning documents and reading text? The cost of your project will depend largely on your scope of work, and the specific skills needed to bring your project to life.

How to write an effective Android developer job post

With a clear picture of your ideal Android developer in mind, it’s time to write that job post. Aim to provide enough detail for a freelancer to know if they’re the right fit for the project.

An effective Android developer job post should include:

  • Scope of work: From user chat rooms to user authentication list all the deliverables you’ll need.
  • Project length: Your job post should indicate whether this is a shorter or larger project.
  • Background: Translate your Android developer needs into a candidate profile. If you prefer experience working with certain industries, software, or marketing channels, mention this here.
  • Budget: Set a budget and note your preference for hourly rates vs. fixed-price contracts.

Android Developers FAQ

What is Android development?

Android developers use the Java programming language, the Android SDK, and other tools to develop apps for smartphones, tablets, and other mobile devices running the Android OS.

Here’s a quick overview of the skills you should look for in Android development freelancers:

  • Native app development through the Android SDK
  • Solid grasp of UI/UX design fundamentals
  • APIs such as REST and SOAP
  • Version control systems such as Git
  • Project management systems such as Jira
  • Cross-platform mobile app development frameworks such as React Native

Android development consultants help businesses create powerful mobile apps that can compete in the Google Play Store.

How much does it cost to hire an Android developer?

Rates can vary due to many factors, including expertise and experience, location, and market conditions. Learn about the cost to hire an android app developer.

Common mistakes that Android developers make

1. Not using asynchronous design

When you work with cloud applications, the assumption is that the user is connected to the internet while they’re accessing your application. You shouldn’t assume users always have instant, high-bandwidth access to the internet with a mobile app. If you attempt to make an API call or use remote services, it can cause your application to hang.

Users may not be aware that short hangs in the app can simple mean something is processing in the background. When your app needs to check for network resources or make a call to a remote API, consider using asynchronous cause and threads that perform the background action while still allowing your users to interact with the app. This will avoid user confusion and prevent the “Application Not Responding” dialog box from displaying.

2. Writing apps that aren’t optimized for low bandwidth

Many developers disregard low-bandwidth users, because high-bandwidth is so common in most areas. Mobile devices still haven’t caught up to the speeds of LAN connections, and many users pay high fees when they go over their dedicated data allocation for the month.

When you use images, always consider that users might have to deal with low bandwidth and data charges. Images should be designed or sized specifically for mobile apps. They can still maintain most of their quality, but they must have a reduced size. You should also limit the number of images on one screen. Too many images will slow down your app’s performance.

3. Using UI elements that work better with a mouse and keyboard

It’s a completely different world in mobile development. Users tap with their fingers and type with their thumbs. Your UI components must make it easy for a user to type a value (e.g., in a text box field) and then tap to go to the next element.

UI elements should be larger and easy for users to tap with their fingers. Having 20 small items for a user to tap isn’t the best idea. Menus should offer options that are easy to find and require minimal scrolling. Input components should be easy to tap and make a selection. Font sizes should be large enough for the user to see.

4. Using too much of the user’s battery power

Most batteries on the market give the user at least a half day of battery power. Some users get a full day from their battery. As more apps are installed on the device, the battery starts to drain faster. This is due to apps running too many processes in the background even when the phone is idle.

While some apps require background processes, most of them don’t. Unless it’s absolutely essential to your app, don’t eat up your user’s battery life with unnecessary background processes. Apps that eat up too much battery power are a nuisance to users and are often removed.

Don’t use network and data resources when it’s not necessary. Close processes when they aren’t necessary, and analyze memory usage (covered above in section

5. Not using standard input elements

Android’s Material Design is a “visual language” all apps must adhere to, and it dictates how nearly every aspect of a UI should look. Not only should you follow Android’s Material Design development standards, but you should also use standard input buttons, dropdown, and textbox components to avoid confusing the user. Your users should be able to easily identify common elements such as a submit button, a menu dropdown icon, input elements, and sections that contain instructions.

6. Forgetting to test Your apps on different screens

One of the top reasons apps fail is poor testing. Developers release code to their clients or deploy it to Google Play and the result is often an app with too many reported bugs. These reports lead to poor reviews and can damage the app’s rating so much that it may never recover.

Always test your apps with different sized screens (tablets and smartphones especially), and each version you support. You might need to hire a QA tester to perform this kind of test, or you can invest in multiple devices to use to create your own testing environment.

Helpful tips & best practices for Android developers

1. Learn XML and Java

Extensible markup language (XML) is a markup language that’s the foundation for the Android user interface (UI) and elements. Java is the back-end coding language of the Android platform, and it’s used with binding functionality with your XML layouts.

This small layout has one data object defined as “Customer.” For developers used to binding elements in even web design, this should be intuitive for you. The data element is defined in Java, and then the object data is bound to the front-end layout element. In this example, we have a first and last name.

Before you get started in Android development, you should be proficient in both of these technologies. Understanding the fundamentals of XML formats is relatively easy, but Java is an object-oriented language and object-oriented programming (OOP) can be challenging if you’re not familiar with the concept. A newer language and framework, Kotlin, has been introduced to help advance Android app development. It can also be used with legacy Java apps as Kotlin co-operates with Java code.

The best way to learn Java is to dive into someone else’s code. GitHub is filled with open-source projects that help you understand Java and OOP concepts. The better your OOP skills are, the easier it will be to create a better coded, less buggy Android app.

2. Understand memory limitations

Mobile devices don’t have the high memory limitations that desktops have. In mobile programming, you must learn to code with smaller memory limitations in mind. If you carelessly use memory on an Android device, you run the risk of your app crashing due to “out of memory” errors.

To work around this, use services on the device sparingly and release memory resources when your app is hidden. You can release memory resources by overriding the onTrimMemory event although you should know that this isn’t a magic solution that allows you to ignore other performance optimization throughout your code.

Google also recommends that you avoid or at least reduce the use of bitmaps to lower the memory use when your app is running on the device. You can also use third-party tools such as Picasso or Fresco.

3. Use the default keyboard based on required input

When the user clicks an input text box in an app, the keyboard that pops up should automatically display the characters required to send the right kind of input. For example, if the user is entering a phone number, a numerical keyboard should be the default keyboard. If the app is requesting an email, a keyboard with characters, @ symbols, and a .com key should display.

4. Always consider user security

When you create your mobile apps, always keep user security in mind. Security should be a priority and often needs research to develop an app that follows best practices to avoid common flaws.

Also, never use broadcast intents to pass sensitive data. This allows a malicious application to sniff the data. Instead, use explicit intents to keep data secure.

5. Don’t use the emulator for real-world testing

The Emulator in Android Studio is great for development and even debugging, but it doesn’t fully simulate a working Android device. You can assume basic environment features with the Emulator, but when it comes to testing, you should always use actual devices.

Of course, this is a huge investment for an Android developer, but it will make the entire development and testing life cycle much more efficient. Testing should never be taken lightly. Fewer bugs mean happier users. This doesn’t mean that you need to buy every device on the market to test your app on, but you should account for some of the more popular ones.

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