Mobile App Performance Optimization

I have attached a short screen-capture video that shows exactly what users are experiencing: every time a section is opened on the app, the interface pauses, fetches user data again, and re-renders. On the map screen there is an extra pause while the Google Maps view spins up. This happens on both iOS and Android builds, so the root cause is almost certainly shared code rather than a platform-specific quirk.

The goal is simple—sections should feel instant and the map should appear as smoothly as any native view, without redundant network calls or redraws. You are free to refactor networking, adjust caching or state-management logic, profile with Xcode Instruments / Android Profiler, tweak Google Maps initialisation, or recommend other best-practice optimisations. I only care that the next build opens sections immediately, keeps previously fetched user data in memory (or a secure local cache), and launches the map with no perceptible lag.

Deliverables • Updated source code and build instructions for both iOS and Android • A short report outlining what you changed, why it improved performance, and benchmarks that show the before/after launch times for section loads and the map screen • One test build per platform so I can verify the improvements on real devices

If any questions come up while you watch the video or scan the repo, let me know and I’ll clarify right away. Budget: USD 250–750 Skills: JavaScript, Mobile App Development, iPhone, Android, Google Maps API, iOS Development, App Development, Xcode