Mobile App Developer Needed for Social Challenge & Rewards Platform

Mobile App Developer Needed for Social Challenge & Rewards Platform (Flutter / React Native) I am looking for an experienced full-stack mobile app developer (or a small team) to build the MVP of a social challenge and rewards platform for iOS and Android. The app combines social networking, gamification, and business engagement. Core Features User App * User registration and login (email, Google, Apple) * User profile with achievements and completed challenges * Social feed showing completed challenges * Follow other users * Like and comment on posts * Search users and businesses * Push notifications Challenges * Browse available challenges * Join a challenge * Upload photo or video as proof of completion * Challenge progress tracking * Points and XP system * Leaderboards * Badges and achievements Business Portal * Business registration and profile * Create and manage challenges * Review submitted challenges * Approve or reject submissions * Reward users after approval * View participant statistics Admin Panel * Manage users * Manage businesses * Moderate reported content * View analytics * Manage categories and rewards Technical Requirements * Flutter or React Native * Firebase or Supabase backend (or suggest a better architecture) * Clean and scalable code * REST API or equivalent backend architecture * Push notifications * Cloud storage for photos/videos * Location support (if required) * GitHub source code with regular commits Deliverables * Complete source code * Backend * Database * API * Deployment assistance * Documentation Ideal Candidate * Has built and published mobile applications * Experience with social networking apps * Experience with photo/video uploads * Strong UI/UX skills * Excellent communication * Can suggest improvements to the product Please include the following in your proposal: 1. Links to mobile apps you have built. 2. Your recommended technology stack. 3. Estimated timeline for the MVP. 4. Fixed-price estimate. 5. What improvements or features you would recommend for this idea. I am looking for a long-term developer who can continue improving the product after the MVP if the collaboration goes well.