Social Network App for iOS/Android

I want to bring a fresh social-networking experience to life and need a complete mobile app that runs smoothly on both iOS and Android. The core of the product is a robust User-profile system—think clean onboarding, editable bios, avatars, privacy controls, and a profile-to-profile follow mechanism. From sign-up to profile customization, everything should feel fast, modern, and secure.

Cross-platform delivery is essential. If you prefer Flutter, React Native, or another proven framework that keeps one code-base in sync across the two stores, let me know your reasoning; I’m open as long as the final apps meet Apple and Google submission standards.

Key requirements
• Native-level performance and polished UI/UX that aligns with current iOS Human Interface and Android Material guidelines
• Scalable back-end (Firebase, Supabase, AWS, or your recommended stack) for profile data storage and authentication
• Clean, well-documented codebase plus a concise setup guide so my in-house team can maintain future iterations
• End-to-end testing and store-ready builds (TestFlight / internal testing track)

Acceptance will be based on:
1. Seamless profile creation and editing without crashes on recent devices (iOS 15+ / Android 11+).
2. Successful App Store and Google Play review passes on first submission.
3. Delivery of source code, build scripts, and a one-page deployment README.

If you can also layer in messaging or a news feed later, mention how you’d architect for those additions upfront—future growth matters.