Abubakar S.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

An app idea should reach the store, not stall out in prototype hell. After building Flutter apps that have been downloaded over 1.7M times, my job is to simply turn your idea into a live cross-platform app that runs clean on Android and iOS, ships on time, and does not fall apart the first time real users touch it. ✅ Flutter and Dart specialist across Android and iOS, one codebase for both ✅ MVP Builder for startups, from Figma to live app in weeks, not months ✅ Firebase, REST APIs, and GraphQL backends wired in cleanly ✅ Bloc, Provider, Riverpod, and GetX for state management done right ✅ Stripe, PayPal, and Razorpay payment integration handled end to end ✅ App Store and Play Store submission, plus ongoing maintenance Here's the truth. Every Flutter build starts with a clean architecture, a state management pattern that fits the project, and a plan for the Android and iOS submission before a single screen is coded. So the MVP that ships in eight weeks is the same MVP that scales to a hundred thousand users without a rewrite. Cross-Platform Flutter Development One codebase, two stores, native-feeling performance on Android and iOS. Flutter and Dart handled the way they were meant to be used, with clean architecture (MVVM, Clean Code) so the app stays maintainable as it grows. UI built pixel-close to your Figma, XD, or Sketch designs. Cross-platform Flutter development done properly means faster shipping and lower cost across both platforms, not a compromise on either. MVP Builder For Startups An MVP should prove your idea works, not blow the whole runway. My MVP Builder process starts by cutting the feature list down to what actually matters for validation, then shipping a live Android and iOS app in weeks. Firebase for backend, auth, and analytics. Payments wired in if the MVP needs them. Store submission is handled so the first users can install from day one. Firebase, APIs, & Backend Integration Firebase Auth, Firestore, Cloud Functions, and FCM for push notifications, all set up cleanly and documented. REST API and GraphQL integrations that hold up under real load. Supabase or Node.js backends when Firebase is not the right fit. State Management Done Right Bloc, Provider, Riverpod, GetX, and MobX are all tools, not religions. The right one depends on the app. Simple apps get simple patterns. Complex apps get architecture that scales. Either way, the state layer stays readable so bug fixes take minutes instead of hours. App Store, Play Store, And Ongoing Maintenance The last mile matters. App Store and Play Store submission handled end to end, including the annoying parts (screenshots, review notes, privacy disclosures). Ongoing app maintenance, version upgrades, bug fixes, and feature additions after launch, so the app keeps working as Android and iOS update around it. Client Testimonials ⭐️⭐️⭐️⭐️⭐️ “Abubakar delivered an outstanding Flutter app ahead of schedule. Clean architecture, strong Firebase knowledge, and perfect communication.” – Ahmed K. ⭐️⭐️⭐️⭐️⭐️ “He built our Android and iOS app from scratch using Flutter. Everything worked flawlessly — exactly what we needed!” – Sara M. ⭐️⭐️⭐️⭐️⭐️ “Excellent Flutter developer! Fast, professional, and a great communicator. I will definitely hire again.” – David P. Tools And Technologies ✅ Languages: Dart, Kotlin basics, Swift basics ✅ Framework: Flutter, Firebase, REST APIs, GraphQL ✅ State Management: Bloc, Provider, Riverpod, GetX, MobX ✅ Backend: Firebase, Supabase, Node.js ✅ Payments: Stripe, PayPal, Razorpay, In-App Purchases ✅ Tools: Android Studio, Xcode, VS Code, Git, Postman, Codemagic If your Flutter app is stuck in prototype mode, your MVP keeps missing deadlines, or your existing app is falling behind on Android and iOS updates, send a short note on what you are building. Honest read on how the fit could work, and a clear next step from there. Flutter developer, cross-platform Flutter, Android app developer, iOS app developer, MVP Builder, Dart developer, Firebase integration, Flutter MVP development, mobile app developer, Flutter app maintenance, Bloc state management, Riverpod, GetX, state management Flutter, Firebase Auth, Firestore, Cloud Functions, push notifications, Stripe integration, Play Store submission, App Store submission, Flutter clean architecture, Flutter Bloc, Flutter GraphQL, REST API Flutter