I need a professional mobile app developer or team to build a cross-platform mobile application (Android & iOS). The app is a multiplayer gaming platform that includes: - Ludo - UNO-like card game (Future games may be added later) Main idea: Users play using virtual Coins. Coins are earned by gameplay and can be redeemed to USDT (manual approval at first). Games themselves do NOT use USDT directly. Main features: - Android & iOS app (Flutter preferred) - User authentication (Email / Google / Apple) - User profile with balance (Coins & USDT) - Multiplayer real-time gameplay - Invite friends / play in teams (2v2) - Create & join rooms - Coin-based entry fees & rewards - Coins to USDT redeem system - Transaction history - Admin dashboard to manage users and withdrawals Technical requirements: - Flutter - Mobile App Development - Multiplayer game integration - Backend (Firebase or Node.js) - REST APIs - Secure wallet logic (USDT – TRC20) Project details: - MVP version - Fixed price - Estimated timeline: 1–3 months - Milestones required Please include in your proposal: - Relevant mobile apps or games you built - Estimated timeline - Suggested tech stack - Total cost with milestones