My cross-platform mobile app repeatedly crashes the moment it opens on both iOS and Android. I need a developer who can: • Analyse the startup crash logs and pinpoint the root cause • Patch the code, update any outdated libraries or build settings, and guarantee a clean launch flow • Test thoroughly on a range of devices and OS versions to confirm the fix holds up under real-world conditions • Generate release builds, prepare store-ready screenshots/metadata if required, and guide the app through submission so it appears live on the App Store and Google Play I will provide the full source code, existing crash reports, and current store credentials. The job is complete when a stable version is approved (or at minimum passes review) on both stores and launches without crashing.