Flutter Mobile App Development Expert

We are looking for an experienced solo Flutter developer (no agencies) to build a high-quality mobile application for both iOS and Android.

The app will include user authentication, a clean and responsive UI, API integration, real-time data handling, in-app purchases, subscriptions, and notifications. The goal is to deliver a fast, scalable, and production-ready app with a smooth user experience.

Scope of Work:

Develop mobile app using Flutter
Implement authentication (email / social login)
Integrate REST APIs
Build responsive UI for multiple screen sizes
Implement in-app purchases and subscription system
Implement push notifications
Handle state management and app performance
Testing and bug fixing before delivery

Requirements:

Individual freelancer only (no agencies or teams)
Strong Dart knowledge
Solid Flutter framework experience (widgets, layouts, navigation)
State management (Provider, Riverpod, Bloc)
REST API integration (HTTP, Dio)
Firebase (Auth, Firestore, Notifications)
Experience with in-app purchases and subscriptions
Experience with push notifications implementation
Responsive UI / cross-platform design
Performance optimization
Debugging & testing
Git version control
App deployment (Google Play & App Store)

Deliverables:

Full Flutter source code
APK / IPA builds
Documentation (setup + deployment)

Timeline:
2–4 weeks

Budget:
Fixed or hourly (to be discussed)

To Apply (Required):
Include the answer to this question at the top of your proposal:
“Explain how you would implement in-app subscriptions in Flutter (tools/libraries + backend validation approach).”