Finish & Convert Mobile App

The initial build of my app lives in Base 44, but it needs to grow up into fully released iOS and Android versions at the same pace. Most screens exist; what is missing is a solid backbone and the outside connections that make those screens actually useful.

Here is where I need your expertise:
• Re-create or export the existing Base 44 front-end so it runs smoothly on both Apple and Android devices.
• Build out the backend—robust database management and well-structured REST/GraphQL APIs are the top priorities.
• Wire up the third-party integrations that are already specced (payments, analytics, and one social login) so they work flawlessly across both platforms.

Deliverables will be considered complete when:
1. Both iOS and Android builds pass TestFlight / internal track review without critical bugs.
2. All API endpoints return expected data and handle errors gracefully.
3. Database schema is documented and scalable.
4. Third-party services authenticate and exchange data reliably in real-world tests.
5. A concise setup & deployment guide allows another developer to reproduce the build.

If you thrive in Swift/Kotlin or a cross-platform stack like Flutter or React Native, and can move quickly from prototype to production, we should talk.