My mobile application is already midway through the development phase, but the current build still needs solid engineering to become a polished, release-ready product on both iOS and Android. The existing codebase compiles and the core screens load, yet several features remain unfinished and a round of stability, performance, and UX refinement is overdue. Here’s what finishing the job will involve: integrating the remaining components, closing open bugs, refining the UI for consistency across devices, and preparing production builds that pass App Store / Google Play review. Source control is set up and I will give you full access along with a detailed task tracker so you can pick up exactly where the previous dev left off. Deliverables • Updated, well-documented source code pushed to the repo • iOS and Android release candidates free of blocking defects • A short hand-off note describing any architectural changes and how to run the project locally Acceptance criteria 1. The app installs and launches without crashes on iOS 14 + and Android 10 +. 2. All current screens and flows respond within two seconds on mid-range hardware. 3. No critical errors reported by TestFlight or Firebase Crashlytics during a one-week beta window. If your cross-platform experience spans Swift, Kotlin, and a shared codebase—or any robust framework that targets both stores—this should be a smooth hand-off. I’m ready to start as soon as you can confirm bandwidth and an estimated timeline.