6+ years of experience building high-quality, user-friendly apps. Specializing in Swift, SwiftUI, UIKit, and Apple’s native frameworks to create seamless, modern, and scalable mobile experiences. 📱 Custom iOS Apps – From idea to App Store, building smooth, well-architected apps. ⚡ Swift, SwiftUI & UIKit Expertise – Modern, clean, and scalable code using the latest Apple technologies. 🚀 Performance & Optimization – Fast, responsive, and well-structured apps for the best UX. 🔗 Third-Party Integrations – Firebase, CloudKit, OpenAI, and more. 🎨 Apple HIG & Best Practices – Following Apple’s Human Interface Guidelines for sleek, intuitive UI/UX. 📩 Let’s discuss your project! Open to both short-term tasks and long-term collaborations.

Hey! I'm a veteran Mobile App Architect and Developer with a decade-long journey in crafting mobile applications. I'm a technology enthusiast who loves exploring new trends and challenges in the mobile app domain. ↳ Fluency in English ↳ Available to work any time zone ↳ Worked with clients around 16+ countries My mission is to provide exceptional returns on clients' technological investments globally through top-notch iOS and Android apps. Whether you are - a start-up - an individual - a technical expert - a company or digital agency I have the perfect solutions for your project because I deal with new trends and challenges daily basis. I specialize in high-quality Mobile App Development areas.: - iPhone native app development (Swift, SwiftUI, iOS SDK, Xcode) - Cross Platform Mobile App Development using Flutter, Dart, and React. - Expert in Upload apps in Appstore and Playstore - Android app development About me: - 25+ mobile apps developed to store - Best Shining Developer Awarded In during Corporate Company - Clean code: Please once check the code standard. (GitHub: shahsaumil2001) - Around 30+ Short/long Term Jobs Completed Successfully With 5 Star Rating - Apps developed by me, Around 50 million+ downloads on store, and users love to use them regular basis. Achievements: ↳ My Client App Was Awarded in IFAH ↳ 12+ years of professional experience ↳ My Client App 𝐓𝐨𝐩-𝐫𝐚𝐧𝐤𝐢𝐧𝐠 𝐟𝐢𝐭𝐧𝐞𝐬𝐬 𝐚𝐩𝐩𝐬 On App Store ↳ My client apps featured in 200+ Magazine and News Papers ↳ Top-Rated Plus Contractor (proven badge for large contracts) 🏆 𝗥𝗲𝘃𝗶𝗲𝘄𝘀 𝗮𝗻𝗱 𝗳𝗲𝗲𝗱𝗯𝗮𝗰𝗸 𝗳𝗿𝗼𝗺 𝗵𝗶𝗴𝗵-𝗽𝗿𝗼𝗳𝗶𝗹𝗲 𝗰𝗹𝗶𝗲𝗻𝘁𝘀 (𝐥𝐚𝐫𝐠𝐞𝐫 𝐜𝐨𝐧𝐭𝐫𝐚𝐜𝐭𝐬 𝐭𝐡𝐚𝐧 $𝟑𝟎𝐊) 🏆 ⭐⭐⭐⭐⭐ I’m very satisfied with Saumil’s work. He was willing to take on any task and did whatever was necessary to complete the project. His excellent communication kept me informed of his progress and when tasks were completed, without needing to be asked. He quickly learned new technologies, successfully working on both iOS and React/NextJS. I would definitely hire him again. - 𝐉𝐞𝐫𝐞𝐦𝐢𝐚𝐡 𝐈𝐫𝐢𝐳𝐚𝐫𝐫𝐲, 𝐔𝐧𝐢𝐭𝐞𝐝 𝐒𝐭𝐚𝐭𝐞𝐬 ⭐⭐⭐⭐⭐ Saumil did an amazing job. He is very collaborative, has valuable inputs and suggestions, and is willing to jump in even when things are not as clearly defined (as often in startup work). Excellent communication and progress updates as he is working.- 𝐕𝐢𝐜𝐭𝐨𝐫 𝐉𝐨𝐬𝐞𝐩𝐡, 𝐈𝐫𝐞𝐥𝐚𝐧𝐝 🙋 𝐅𝐫𝐞𝐪𝐮𝐞𝐧𝐭𝐥𝐲 𝐚𝐬𝐤𝐞𝐝 𝐪𝐮𝐞𝐬𝐭𝐢𝐨𝐧𝐬(𝐅𝐀𝐐): Q1: Can you offer maintenance support post-development? A1: Yes, I offer free maintenance support for three months after mobile app development. Q2: Can you help with Mobile app design? A2: As an additional service, I provide mobile app UX design. Q3: Can you help with the landing page website for my mobile app product? A3: Yes, I can help to build the landing page for a mobile app product. Explore my perfect feedback on Upwork for a taste of what I can bring to your project. Let’s create something exceptional together! Please feel free to reach out to discuss how we can bring your vision to life. Kind Regards, Saumil Shah Keywords to find me : -------------------------- Native iOS App Developer, Android App Developer, Cross-Platform Flutter App Developer, Top Flutter Developer, React Native, API Integration, Frontend Developer, React.js, In-app purchases, Location, Payment Gateway Integration, Apple, Xcode, Push notifications, User authentication, User profile creation, SwiftUI, Mapbox, HealthKit, Alamofire, Google Analytics, Mapkit, OpenAI, ChatGPT, swift, Stripe, AppFlyer, Revenuecat. Last updated: 22 Nov 2024.

Hi, With over 10 years in the IT sector, I specialize in mobile app development for both iOS and Android platforms, as well as in related disciplines such as management, design, and backend development. I've had the pleasure of working with both small and large startups across various sectors like IoT and eCommerce. I can guide you through the entire app development process — from designing UI and code architecture to development, testing, and eventual publishing and support. I place a high value on ownership and transparency, allowing me to maintain long-term relationships with several clients over the years. What drives me is the desire to create something of value, executed using the most efficient resources and technical solutions. Clean, readable code, well-thought-out architecture, and automated tests not only bring me joy but also result in reliable and easily maintainable code for my clients. Feel free to reach out to me. ___________________________________________ ▾ Some technologies I can help you with ▾ ✅ Flutter for iOS and Android: Dart, Flutter SDK, BLoC, Flutter DevTools. ✅ Native iOS, Swift, CocoaPods, Swift UI, AVFoundation, CoreAnimation. ✅ Native Android, Java, Kotlin, Live Data, Coroutines, Dagger 2, Butterknife, Databinding, Retrofit 2, Volley, AndroidX, Picasso, Timber. 🔸 Android & iOS design principles and interface guidelines, UI with animation, custom views, graphics (drawing), Material Design, dark theme, 🔸 SQLite, Realm, Room, Firebase Database, JSON, XML, Pojo, Moshi 🔸 Tests and Test Cases Development, Unit & Integration & Acceptance tests, Manual testing, JUnit, Mockito, Espresso, Appium, CI (TeamCity, Jenkins) 🔸 Purchases & In-app Purchases, Subscriptions 🔸 Background tasks & Services, Sharing, Calendar, Media (music, video), Push Notifications, Off-line mode, In-App Advertising 🔸 Camera, Geo-Location, Geofence, Bluetooth, BLE, GATT, Wifi stack 🔸 Firebase Authentication, Cloud Messaging, Analytics, Crashlytics, Performance 🔸 Google Authentication, Analytics, Maps, Places 🔸 Facebook, Twitter, PayPal, Braintree ✅ Some tools I use to get projects done 🔸 Jira, Trello, and similar 🔸 Git, Github, Bitbucket 🔸 Sentry, Swagger, Firebase 🔸 Figma, InVision, Zeplin 🔸 Xcode, App Code, Android Studio, Makefile, WebStorm, Postman, Postico

I'm Roman, founder of Define Solutions. We've been building iOS apps since 2016 and have since shipped over 200 projects with 15 million downloads across the App Store. Over the years we've built across pretty much every category — fitness and health tracking apps, map-heavy apps with complex location logic, entertainment and lifestyle apps, news and media apps, music apps, restaurant and food ordering apps, online stores, social apps, e-readers and book apps, iPad-specific builds, Apple Watch companions, and CarPlay integrations. A significant part of our work has also been with large enterprise clients — internal tools and customer-facing apps for companies operating at serious scale. Some projects came to us as a clean brief, some came half-built from another team. We've handled both. The stack we work with: Swift, SwiftUI, UIKit, Core Data, CloudKit, HealthKit, CoreMotion, WatchKit, CarPlay, MusicKit, CoreAudio, MediaPlayer, MapKit, CoreLocation, WidgetKit, Live Activities, AVFoundation, StoreKit 2, RevenueCat, Apple Pay, PassKit, CoreBluetooth, CoreML, PushKit, CallKit, REST APIs, Firebase, PostgreSQL, MySQL, Supabase, AWS, Google Cloud, Fastlane, CI/CD Ad monetization: AdMob (+AdMob Mediation), AppLovin (+MAX Mediation), IronSource (+Unity LevelPlay Ad Mediation) One thing you learn after 200+ projects — good code isn't enough on its own. The projects that go smoothly are the ones where scope is locked before development starts, App Store requirements are accounted for from day one, and everyone has the same picture of the finish line. Making sure that foundation is solid before a single line is written is how we start every engagement. If you have an iOS project — message me. I'll tell you within a day whether it's something we can help with and roughly what it would take.

10+ years Experienced Mobile App Developer | iOS Developer | Android App | Swift | Kotlin | React Native App Developer | Flutter App Developer | Javascript | Typescript | Figma | Mobile App Design ✅ 1889+ Hours ✅ $40k+ Earned in Upwork ✅ 90%+ Job Success Score ✅ 99% Client Recommendation Rate ✅ 90% Client Retention Rate ✅ 10+ years industry experience in Mobile App Developer ✅ Fluent English ✅ iOS (Swift) | Android (Kotlin) | React Native | AWS | Firebase ✅ Full Stack Mobile Application Developer Hello 👋 and Welcome! I am a 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐌𝐨𝐛𝐢𝐥𝐞 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 who can handle all aspects of mobile app development. I am having 10+ years of experience in iOS & Android mobile applications development and backend APIs development. I can believe in delivering the best possible solution that can be implemented in your business strategies and give you a state-of-the-art app experience to beat your competitors. I also understand the importance of creating highly readable and easily maintainable source code. I did many projects with excellent results. ​ 🌟 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐒𝐤𝐢𝐥𝐥𝐬 ★ iOS App Development (Swift Language) ★ Android App Development (Kotlin Language) ★ React Native App Development ★ BLE and iBeacon Technology ★ APIs:- Google Map, Google Places APIs. ★ Social Media Authentication: Facebook, Google, Twitter, Instagram, and Flickr ★ Payment Gateway Integration: Paypal, Stripe, Apple Pay, and In-App Purchase ★ Firebase:- Authentication, Database, Firestore DataBase, Ad-Mob, FCM, Cloud Messaging, Crashlytics, Analytics. ★ AWS (Amazon Web Services):- EC2 Instance, Cognito, S3, SNS, Lambda, Dynamo DB​, API Console, Cloud Formation. 🌟 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 𝐢𝐧 𝐏𝐫𝐨𝐣𝐞𝐜𝐭 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭 𝐓𝐨𝐨𝐥𝐬 ★ 𝐓𝐨𝐨𝐥𝐬: JIRA, Asana, Basecamp, Smartsheet, Instabug, Wrike ★ 𝐑𝐞𝐩𝐨𝐬𝐢𝐭𝐨𝐫𝐢𝐞𝐬: Github, GitLab, BitBucket, AWS CodeCommit ★ 𝐕𝐞𝐫𝐬𝐢𝐨𝐧 𝐂𝐨𝐧𝐭𝐫𝐨𝐥 𝐒𝐲𝐬𝐭𝐞𝐦: Git, SVN, Mercurial, and CVS ★ 𝐂𝐈/𝐂𝐃 𝐏𝐢𝐩𝐞𝐥𝐢𝐧𝐞: Bitrise 🌟 𝐌𝐲 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 ★ Chatting/Messaging iOS App ★ e-Commerce iOS/Android App ★ Event management iOS App ★ Business management iOS App ★ Enterprise MDM iOS App ★ Pill Reminder iOS/Android App ★ QRCode App ★ Image processing App ★ BLE and iBeacon tech App ★ Restaurant, Places, Event booking and Live Tracking App ★ Greeting App​ ★ Dating App​ 🚀 Want to discuss your project? Just hit the green 𝐈𝐧𝐯𝐢𝐭𝐞 𝐭𝐨 𝐉𝐨𝐛 button, and let's start! Thanks!

From fitness apps featured by Apple to AI-powered platforms with 20K+ users, I build high-performance mobile apps that feel great, scale smoothly, and deliver real business impact. As a Senior Mobile App Developer with 10+ years of experience, I combine deep engineering expertise with strong product thinking to help founders launch faster and grow confidently. I’m a Mobile App Developer specializing in iOS mobile app and Android mobile app development, working with Swift, Kotlin, and Flutter to build production-ready solutions with clean architecture, smooth UX, and long-term maintainability. As a hands-on Flutter Developer, Swift Developer, and Kotlin Developer, I create cross-platform and native mobile apps powered by modern AI and scalable backend systems. Clients value that I don’t just “write code” — I act as a product-minded Mobile App Developer, helping shape the roadmap, optimize monetization, and make smart technical decisions from day one. 📈 Highlights & Proven Results • Fitness iOS Mobile App Featured by Apple Built using Swift & SwiftUI with HealthKit and Core Data integration. A premium-quality iOS mobile app focused on performance, clean UI, and personalized fitness experiences. • Art & Exhibition Finder Android & iOS Mobile App (10K+ Daily Users) Large-scale cross-platform mobile app using Flutter, Google Maps, and Firebase. Delivered high-performance caching, push notifications, analytics, and scalable backend infrastructure. • AI-Powered Voice Shop Assistant (ChatGPT + Twilio) Developed an AI-driven mobile solution using OpenAI API, conversational AI, and real-time voice processing. A strong example of AI integration inside a production-ready mobile app. • AI Parenting iOS & Android Mobile App (1,000+ Downloads in First Week) Core ML, Firebase backend, push notifications, and personalized AI insights. Secure, scalable architecture designed for long-term growth. • Viral AI Attractiveness Mobile App (20K+ Downloads) Face detection, AI scoring engine, subscription monetization, and ASO-driven growth. Engineered for scale across both iOS mobile app and Android mobile app platforms. 🧰 What I Bring as a Mobile App Developer Platforms: iOS, Android, Flutter, watchOS, tvOS Languages: Swift, Kotlin, Dart, Objective-C Architecture: MVVM, VIPER, TCA, Clean Architecture UI: SwiftUI, UIKit, Jetpack Compose AI & ML: OpenAI API, ChatGPT integration, Core ML, NLP, Computer Vision Backend: Firebase, Supabase, REST APIs, GraphQL, WebSockets Monetization: RevenueCat, Superwall, subscriptions, paywalls Analytics: Amplitude, Firebase Analytics, AppsFlyer Advanced: Push notifications, VoIP (Twilio/Agora), geolocation, offline mode, barcode scanning, ARKit CI/CD: Fastlane, Xcode Cloud, GitHub Actions, Codemagic As a cross-platform Flutter Mobile App Developer and native iOS / Android Mobile App Developer, I specialize in turning early ideas into scalable AI-powered products — from architecture and development to testing, analytics, deployment, and post-launch growth. 💬 Why Clients Choose Me Clients often say I “just get it.” I translate business goals into scalable, high-performance mobile apps built with clean code, strong UX, and future-proof architecture. If you’re looking for a Senior Mobile App Developer (Swift, Kotlin, Flutter, AI) who thinks like both an engineer and a product owner — I’d be happy to help launch or scale your next iOS mobile app or Android mobile app. Updated: 02.07.26

I design and develop modern iOS apps in Swift & SwiftUI, and craft interactive games with Unity and Godot. ⭐100% Job sccess rate ⭐Rising Talent ✅ 5 years of experience ✅ Successfully delivering multiple projects ✅Swift & SwiftUI ✅Unity & Godot As an experienced iOS developer and Game Developer , I have amassed several years of expertise in the field, encompassing a diverse range of tasks such as mobile app development and game development utilizing SpriteKit, Unity and Godot. Throughout my professional journey, I have honed my skills in crafting seamless and user-friendly applications, as well as engaging and immersive games. As a dedicated professional, I approach each challenge with a solution-oriented mindset, diligently solving problems and optimizing performance to ensure optimal user experiences. My commitment to delivering projects on time and within budget, combined with my penchant for maintaining code quality, has earned me a reputation for reliability and proficiency among peers and clients. Thanks for the Visiting!!! Hope we will work together!

If your app idea is stuck on paper or half-built and broken I can take it live. I'm Ayushi, a Senior Mobile App Developer with 8+ years building iOS, Android, and Flutter apps that actually get shipped to the App Store, on Google Play, and in the hands of real users. My focus is always the same: enterprise-quality code, reliable delivery, and communication that doesn't leave you guessing. 50+ apps delivered across fitness, edtech, SaaS, sports, healthcare, and e-commerce. 🔧 What I build: - iOS apps: Swift, SwiftUI (native, clean, App Store ready) - Android apps: Kotlin, Jetpack Compose - Cross-platform: Flutter/Dart for iOS + Android from one codebase - MVPs for startups that need to move fast and look polished - Full-feature apps with subscriptions, payments, user roles, and API integrations 📱 A few notable apps I’ve built and shipped: 1. Reveal Club: fitness + nutrition app with HealthKit, Stripe subscriptions, calorie tracking, meal plans (iOS & Android, live on both stores) 2. Sports Life Success: 4-role club management app with memberships, game certificates, coach/parent/player flows (iOS & Android, live) 3. TutumNet: mental health self-care app with goal tracking and support network (iOS, live) 4. iPromise: goal accountability app with SMS invites, guest flow and category management (Flutter, Android, live) 5. Thrive: tutor attendance and academic tracking app with time cards and progress reports (iOS, live) 6. Smart Routing: GPS navigation app for courier drivers handling 1000+ waypoints via Mapbox with CarPlay integration ⚙️ Tech stack: - Swift · SwiftUI · Kotlin · Dart · Flutter - Firebase · REST APIs · Alamofire · Retrofit · Stripe · RevenueCat - HealthKit · Mapbox · Push Notifications · Zendesk - MVVM · Clean Architecture · CI/CD · Git · Xcode · Android Studio 🏭 Industries I know well: - Fitness & wellness · Mental health · Sports management · EdTech - SaaS platforms · E-commerce · Logistics · On-demand services ✅ Why clients keep working with me: - I don't just write code I think about the product. I ask the right questions before building. - Clean, maintainable code that your next developer can actually read. - I use AI tools (ChatGPT, Cursor) to work faster but I review, test and own every line. - I work in organised processes Slack/Teams standups, Jira/Asana tracking, regular screen shares. - Realistic timelines. No ghost-acts. Direct communication when blockers come up. If you're a startup that needs a first version shipped fast, a business scaling an existing app, or a solo founder with a great idea send me a message and let's talk about your project. 📩 Message me with your app idea or job description.

- I love God, my wife, and my children! - Active App Developer with many apps on the Apple App Store - Fluent in Mandarin Chinese.

🏆 Top Rated : A Mobile App Developer with 9+ years of experience, specializing in cross-platform (Flutter) and native iOS development, and a strong passion for integrating AI and ML to build smarter, more capable apps. 🏆 Experienced with more than fortune 30+ Clients . 🚀 𝗪𝗵𝗮𝘁 𝗜 𝗗𝗼: 𝗖𝗿𝗼𝘀𝘀-𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺 & 𝗡𝗮𝘁𝗶𝘃𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 : - Flutter, Swift/SwiftUI, Kotlin, React Native - Pixel-perfect UI/UX, scalable architecture, clean code 𝗔𝗜 / 𝗠𝗟 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀 𝗶𝗻 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽𝘀: - LLM / Chatbot Integration (OpenAI, Claude, Gemini, custom APIs) - On-Device AI (Edge AI): TensorFlow Lite, Core ML for image, speech, and text tasks - Computer Vision: OCR, face/object detection, real-time recognition - Speech & Voice: STT (speech-to-text), TTS (text-to-speech), real-time transcription 𝗦𝗺𝗮𝗿𝘁 𝗠𝗼𝗻𝗲𝘁𝗶𝘇𝗮𝘁𝗶𝗼𝗻 & 𝗖𝗹𝗼𝘂𝗱: - RevenueCat, in-app purchases, Apple Pay, Google Pay - Firebase, AWS, Google Cloud integration for scalable backends 𝗣𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲, 𝗣𝗿𝗶𝘃𝗮𝗰𝘆 & 𝗖𝗼𝘀𝘁-𝗘𝗳𝗳𝗶𝗰𝗶𝗲𝗻𝗰𝘆: - Optimized ML models (quantization, pruning) - Offline / on-device inference for privacy & speed - Efficient architectures to minimize API costs 🏆 𝗪𝗵𝘆 𝗪𝗼𝗿𝗸 𝗪𝗶𝘁𝗵 𝗠𝗲? ✔️ Top Rated on Upwork with consistent client satisfaction ✔️ Strong portfolio of 20+ published apps (iOS & Android) ✔️ Full-stack delivery: from idea → prototype → MVP → production → maintenance ✔️ Proven ability to merge AI intelligence with sleek mobile experiences 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴 𝗦𝗽𝗲𝗰𝗶𝗮𝗹𝗶𝘁𝘆 : - Collaborate with Product Managers , Designers , Cross functions Developers team and Clients. - Designing and Developing product architecture from scratch . - Following Agile and Scrum Methodologies. - Using Design Principles and Design Patterns . Thank you for taking the time to look over my profile and let’s build something great together!