Samson E.

Need to finish, fix, improve, or launch an existing mobile app? Or build an AI-powered mobile app that is ready for real users? I help founders, startups, and product teams turn unfinished or underperforming mobile apps into working products that can be tested, launched, and maintained without unnecessary rebuilding. If your project is stuck because of bugs, incomplete features, API problems, backend issues, poor performance, failed App Store submission, Google Play release problems, or an AI feature that still does not work properly, I can help move it from its current state to production. Existing Mobile App Completion, Handover & Release If you already have an app built in Flutter, React Native, FlutterFlow, Expo, or another cross-platform stack, I can take over the existing codebase and help with: • existing mobile app improvement • bug fixing and debugging • unfinished feature completion • app handover and codebase review • performance optimization • mobile app testing and QA • App Store submission • Google Play release • production readiness and post-launch fixes The focus is to preserve what already works, identify what is blocking release, and complete the product without wasting time rebuilding the entire app. AI Mobile App Development For products that need AI features, I can help build and integrate: • AI-powered mobile apps • OpenAI API integration • Claude API integration • AI assistants and conversational features • RAG-based workflows • AI agents inside mobile products • Python and FastAPI backends • AI API integration with Flutter or React Native The goal is not simply to “add AI,” but to connect AI features to a real user workflow, backend, data source, authentication system, and mobile experience. Flutter & React Native Mobile App Development I work with Flutter and React Native for cross-platform mobile app development, including: • Flutter mobile app development • React Native and Expo development • iOS and Android mobile apps • MVP mobile app development • mobile app feature development • existing app upgrades • app maintenance and updates FlutterFlow can also be used where rapid MVP development or an existing FlutterFlow project makes sense. API Integration & Mobile Backend Development Many mobile apps fail because the front end is disconnected from the systems behind it. I can help with: • API integration • REST API development • user authentication • Firebase and Supabase • PostgreSQL • Python / FastAPI • Node.js backends • realtime data • payments and subscriptions • Stripe and RevenueCat • push notifications • third-party service integration This is useful when the app UI already exists but the backend, authentication, payments, AI, or external integrations are incomplete or unreliable. Mobile App Testing, App Store & Google Play Launch If the app is already built but not ready to ship, I can help with: • mobile app testing • bug fixing before release • TestFlight preparation • App Store submission • Google Play deployment • release configuration • production checks • post-launch maintenance A Recent Example On a recent Upwork project, I worked inside an existing FlutterFlow app and implemented user profiles, profile editing, favorites, Firebase queries, save and unsave logic, conditional states, and mobile testing while preserving the existing app structure. The client specifically valued that the required functionality was completed without unnecessary rebuilding. If you need a Mobile App Developer to complete an existing mobile app, build an AI-powered mobile app, handle Flutter or React Native development, fix bugs, connect APIs, improve the backend, or prepare the product for App Store and Google Play launch, send me the current app, codebase, FlutterFlow project, Figma design, API documentation, or the issue blocking release. You will get a clear path from the current problem to a working, testable, launch-ready mobile product.