The operating problem
An established web product already has users, data models, and operational rules. A mobile application needs to reuse those foundations without merely reproducing desktop screens on a smaller display.
What we built
We built an Expo and React Native companion in TypeScript that consumes the existing PHP API. The work covers collection and exchange interactions within mobile-specific screens and navigation.
Development includes build preparation and device-oriented QA, with attention to loading, empty states, errors, and recovery. Backend integration remains shared so the mobile product does not create a second independent source of business truth.
What the work enables
The repository documents a substantial development-stage mobile application and distribution preparation. It is not presented as a publicly released App Store product.
Reusing a backend is a strong starting point; a usable mobile experience still needs deliberate interaction design.