You will get bug fixes and performance improvement support in existing Android app
Top Rated
Top Rated
Project details
Hello,
- Are you facing bugs in your mobile app? and do you want to make your mobile app more stable by fixing them?
- Do you want to optimize your mobile app performance, extend and redesign your existing mobile app project?
- Do you want an expert mobile app developer to extend your existing mobile app development project?
I’m here to help you with that and my service will make your product spectacular. I would like to share my recent experience regarding this. I have completed the “Peachmode - Ecommerce app” mobile app development project in which I did bug fixing and extended mobile app functionality. Client is very happy with the new version of mobile app. Current android mobile app stats are something like.. 4.2 Stars Rating, App Install 1M+
I have great problem understanding and solving skills so after accepting your project, I can make proper progress from starting. I provide free-of-cost maintenance support for 3 months after mobile app development so you can take your time to test your app final version.
I always maintain all guidelines of Google and Apple so we can touch best top user experience with millions of users and no chance of your mobile app being banned.
- Are you facing bugs in your mobile app? and do you want to make your mobile app more stable by fixing them?
- Do you want to optimize your mobile app performance, extend and redesign your existing mobile app project?
- Do you want an expert mobile app developer to extend your existing mobile app development project?
I’m here to help you with that and my service will make your product spectacular. I would like to share my recent experience regarding this. I have completed the “Peachmode - Ecommerce app” mobile app development project in which I did bug fixing and extended mobile app functionality. Client is very happy with the new version of mobile app. Current android mobile app stats are something like.. 4.2 Stars Rating, App Install 1M+
I have great problem understanding and solving skills so after accepting your project, I can make proper progress from starting. I provide free-of-cost maintenance support for 3 months after mobile app development so you can take your time to test your app final version.
I always maintain all guidelines of Google and Apple so we can touch best top user experience with millions of users and no chance of your mobile app being banned.
Platform
AndroidApp Type
Native AppDevelopment Technology
Java, KotlinApp Purpose
Delivery, Finance, Education, Health & Fitness, Maps & Navigation, Medical, News, Productivity, Restaurant, TravelExpertise
Design, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$99
|
Standard
$299
|
Advanced
$499
|
|---|---|---|---|
| Delivery Time | 3 days | 10 days | 15 days |
Number of Revisions | 1 | 1 | 2 |
Bug Investigation | |||
Fix Documentation |
256 reviews
(255)
(1)
(0)
(0)
(0)
This project doesn't have any reviews.
KA
Kinga A.
Jun 23, 2026
30 minute consultation
MP
Madhav P.
Jun 1, 2026
Frontend Developer for Cross-Platform Gamified Travel App (No Backend Access)
The team has been absolutely fantastic to work with from the start. I have been working with them for more than a year now and I haven't looked back. They are attentive, focussed and always ready to assist. The team has always been able to go an extra mile in suggesting improvements, making the solution more robust. I wouldn't have been able to bring my vision to life without all the support and expertise from this team.
BS
Baeli S.
May 25, 2026
60 minute consultation
I have been very happy with how responsive and adaptable Sagar and his team have been. I’ve had many questions throughout the process, and Sagar has always been ready and happy to answer them clearly in a way that’s easy to understand and helpful in keeping the project moving forward. I would gladly work with them again in the future.
BS
Baeli S.
May 25, 2026
60 minute consultation
Sagar and his team have been a pleasure to work with. They are highly communicative and responsive, consistently addressing questions as well as the specific wants and needs of the project. Throughout the entire process, I have felt well supported and thoughtfully accommodated.
JV
Jorge V.
May 24, 2026
30 minute consultation
The meeting went great, he is a great listener.
About Sagarkumar
Mobile App Developer | iOS, Android, Flutter | Mobile App Development
100%
Job Success
Surat, India - 8:38 am local time
ARE YOU
- Looking for a mobile app development service starting from the design, development to release and publish a mobile app to Play Store and App Store for mobile app users/customers.
- Looking for a mobile app developer who can integrate new features into your existing Android app, iOS app or Flutter app based projects?
- Individual | Big company | Startup who wants to build and create Android app or iOS app from scratch?
- Looking for a mobile app developer who can transform your idea into reality?
- Someone who invests in the best so you get better results?
If any of that is what you need, message me and I am here to help you.
Who am I?
- I'm Sagarkumar Surani, a Senior Mobile App Developer with 10+ years of experience and a Master’s degree in Computer Science and Engineering.
- I worked with big brands, startups and individuals to create mobile apps for their requirements. My work also got featured a few times in the market store. Apps developed by me have 100 million+ downloads on store and users love to keep the app on their phone as a permanent app.
- I’ve worked with clients from over 40 countries, such as the USA, UK, Germany, India, and Australia, which has given me a strong understanding of different international markets. My experience covers a variety of industries, including Travel and Tourism, train ticket booking, transport, educational, hospitality, health & wellness, real estate, live streaming, Marketplace, food & delivery, human resources, fitness, financial & banking sectors, e-commerce, dating, sports, Betting, music/audio, and automotive.
I specialize in these high-quality Mobile App Design and Development areas:
- Android app development
- Kotlin, Java, Android SDK, Android Studio
- iPhone app development
- Swift, SwiftUI, Objective C, iOS SDK, Xcode
- Backend Development | Node.js
- Cross Platform Mobile App Development using Flutter, Dart
- UI/UX: Mobile design
- Mobile & Web app design
- UX/UI design
- Landing page design
Skills :
- Have experience developing, releasing & maintaining applications as a Mobile app developer
- Strong skills in executing pixel & animation perfect UI's relative to good app performance
- Have great communication skills and ability to work with your team
- Have a great understanding of MVC, MVP, MVVM and take great care to ensure each project is well-architecture with best practices and easily maintainable so it can be enhanced as feature grows.
- The ability to take initiative and work independently with very little supervision
- Application requirement analysis
- Translating requirements to technical languages
In addition to Mobile app development services, my topic areas of expertise include:
- Mobile Application Architect
- Native Mobile Application Development consultation
- Mobile Application UI/UX design using Figma, Adobe XD
- Mobile Application backend services Firebase, AWS Mobile Hub
- Mobile Application backend development: Node, Express, TypeScript, JavaScript, MongoDB, MySQL, PHP, RESTful API development, Google App Engine
- Website development, Web Scraping, Web Admin Panel, CMS Development
- Chatbot development, Facebook Messenger
If you still think this is right for you, contact me.
Thank you in advance for your time and consideration.
Kind Regards
Sagarkumar Surani
P.S.
- When you work with me your satisfaction is 100% guaranteed.
- Every person who ever worked with me got results. EVER!
- Even if you don’t hire me now, keep my profile link in case you need a Mobile App Developer later.
FAQ
Q: Can you provide maintenance support after development?
A: Yes, I provide free of cost maintenance support for 12 months after mobile app development.
Q: Can you help with Mobile app design?
A: Yes, I offer a Mobile app UX design as an additional service.
Q: Can you help with the landing page website for my mobile app product?
A: Yes, I can help to build the landing page for a mobile app product.
Warmly,
Sagarkumar Surani
-----------------------------------------------------
Native Android App Developer, iOS App Developer, Cross-Platform Flutter App Developer, Top Flutter Developer, React Native, Hire Best MERN Stack Developer, RESTful API Developer, API Integration, Frontend Developer, React.js, Backend Developer, Nodejs, Javascript, Figma, UI/UX Design, Prototype, In-app purchases, Location, Payment Gateway Integration, Apple Xcode, Android Studio, Push notifications, User authentication, User profile creation, QA, Unit Testing, Regression Testing, Dating App, Ecommerce App, RevenueCat, Adapty, 3rd Party SDK Integration, SQLite, MySQL, Firebase Cloud Firestore, Realtime Database, Kotlin, Swift, Java, Dart, SwiftUI, Twilio, Mapbox, HealthKit, Google Analytics, Amazon Web Services, DigitalOcean, Core Data, UIKit, MapKit, Phone, Full Stack Developer, iPad, OpenAI ChatGPT LLM, ChatGPT API Integration
.
Steps for completing your project
After purchasing the project, send requirements so Sagarkumar can start the project.
Delivery time starts when Sagarkumar receives requirements from you.
Sagarkumar works on your project following the steps below.
Revisions may occur after the delivery date.
Initial call
We’ll begin with the initial determination call in which we will discuss project details and issues in which you need my help.
Code review
Hereafter the initial call discussion, I would like to review the code to study current code quality and architecture.