Cross-Platform Family Event App

I’m putting together a simple mobile app for a personal family event and I want it to run on both Android and iOS from a single code-base. The app’s main purpose is entertainment: I need a built-in game that guests can play during the gathering—think light, fun and quick to learn. Everything else is secondary. Platforms Feel free to use Flutter, React Native, Unity, or any other framework you trust for shipping clean builds to Google Play and the App Store. Stability and fast loading times are more important than the specific stack. Core Feature • One self-contained game themed around the event, including basic UI, sound, and score tracking. I’ll supply artwork ideas; you handle coding and polish. Nice-to-haves (quote separately) • Simple schedule screen, photo wall, or guest list if you can slot them in without bloating the app. Deliverables 1. Android APK and iOS TestFlight build ready for store submission 2. Full source code in Git 3. Config file or lightweight admin panel for changing event details and game content 4. Deployment assistance through final store approval Acceptance Criteria • Runs on Android 12+ and iOS 15+ without crashes • Game loads in under three seconds on mid-range devices • Passes a 15-minute continuous play test with no memory leaks Message me with your proposed tech stack, estimated timeline, and any similar work you’ve shipped so we can lock in the scope and move forward. App Requirement Project: Red Light, Green Light - Multiplayer App [Squid Game Type] Overview: A real-time multiplayer mobile game with 2 apps - User App and Admin App. Admin controls the game state, user phone acts as a movement detector. Players who move during Red Light get auto-eliminated. 1. User Roles: A) Admin App: - Creates a Game Room / Round - Sets movement threshold [sensitivity for X, Y, Z axis] - Controls: GREEN LIGHT button, RED LIGHT button, END GAME button - Live dashboard: List of all players - Green / Moving / Eliminated - Gets instant alert when a player moves during Red Light B) User App: - Joins Game Room via Code / QR - Shows status: Waiting / GREEN LIGHT - You can move / RED LIGHT - FREEZE! - In Green Light: App is silent, movement is ignored - In Red Light: App starts monitoring Gyro + Accelerometer sensors. If movement > threshold, auto-sends alert to admin. 2. Game Flow: 1. Both Admin and Users install app and join same room 2. Admin sets threshold value [e.g., 0.5g] and starts Round 1 3. Admin presses GREEN LIGHT -> All user phones go silent, players can run 4. Admin presses RED LIGHT -> All user phones activate motion detection. If any user's phone detects movement beyond threshold in any 3 directions, that user is marked as MOVED 5. Admin screen highlights moved users and marks them as ELIMINATED 6. Next round starts only with non-eliminated users. Cycle of Green/Red repeats 7. Admin ends the game with END GAME - final winners list is generated 3. Technical Logic: - Communication: Firebase Realtime / http://Socket.io for instant Green/Red signal [latency threshold OR abs(y) > threshold OR abs(z) > threshold during Red Light -> trigger violation. - Anti-cheat: Detect if user puts phone in pocket/locks screen - keep foreground service - Tech Stack Suggestion: Flutter / React Native for both apps, Firebase for backend + live sync[Android][iOS] Tagline for App: "Freeze or Get Eliminated - Real-Life Squid Game on your phone"