React Native Messaging App Conversion

I have a fully-working messaging platform built with React and Firebase. Now I need the same product delivered as truly react native apps for both iOS and Android. Every screen, animation, colour and interaction must match the current design pixel-for-pixel, so you will be working from the existing UI as the definitive reference.

Functionality and flow needs to remain unchanged—real-time chat powered by Firebase, user authentication, media uploads, push notifications and all current edge-case flows must carry over seamlessly. On top of that, integrate in-app subscriptions using each store’s preferred system so users can choose either a monthly or an annual subscription