Cross-Platform Social Networking App

I’m planning to launch a brand-new social networking experience and need a complete mobile solution that runs smoothly on both iOS and Android. The core idea is familiar—connect people through profiles, posts, likes, and real-time chat—but the execution has to feel fresh, visually appealing, and lightning fast.

Here’s what I have in mind:
• A clean onboarding flow with social logins
• Swipe-friendly feed that supports text, images, and short videos
• Real-time messaging (one-to-one and group) with push notifications
• Basic profile customization and follow/mention features
• Secure cloud-based backend with scalable user management and analytics

Deliverables I’m looking for:
1. Clickable prototype or wireframes to lock down UX
2. Fully coded cross-platform app (React Native, Flutter, or a comparable framework—open to your recommendation)
3. Integrated backend (Firebase, AWS Amplify, or your preferred stack) with proper authentication and GDPR-compliant data storage
4. Testing suite covering unit, integration, and device testing
5. A concise hand-off package: source code, build instructions, and short video walkthrough

Acceptance criteria will be simple: the build installs without errors on both an iOS and an Android device, all listed features work as expected, and the codebase is cleanly documented.

If you have prior social-app examples and can outline a realistic timeline with milestones, let’s talk details and get this rolling.