Cross-Platform Social Networking App Build

I want to launch a social networking app that runs smoothly on both iOS and Android. The core experience revolves around three essentials: rich user profiles, a reliable real-time messaging system, and an engaging activity feed that keeps everyone up to date.

Login should be effortless, so the first screen needs social-media authentication only—no email or phone flow cluttering the interface. Once inside, users must be able to edit their profile picture and bio, exchange direct messages instantly, and scroll the feed with fluid pulls to refresh.

Here is what I need from you:
• A native or high-performance cross-platform build that passes App Store and Google Play review
• Secure social-media sign-in integrated with the most common providers
• Clean, well-documented code plus a short hand-off session so my team can maintain it
• Test-flight/Test track releases for feedback before the final store submissions

If you have a preferred stack—whether that’s Swift/Kotlin, React Native, Flutter, or another framework—please outline why it fits the brief and how you will support push notifications, image uploads, and real-time chat. Include examples of past social apps you have shipped and your estimated timeline for each major milestone.

I’m ready to move quickly once I find the right partner.