I already have the full codebase and data file for a mobile word-puzzle that ships to both iOS and Android. The core gameplay works, but the current build hangs frequently and shows other optimisation flaws, so the first task is a thorough performance clean-up. Once stability is restored, I’d like to refresh a few existing screens, polish the UX, and introduce one or two lightweight features we will define together. I wil provide the the data file on demand. Deliverables • Fix performance issues: eliminate freezes, crashes, and obvious memory leaks, achieving smooth play on recent iOS and Android devices. • Update existing features: modernise UI elements, ensure compatibility with the latest OS versions, and tidy up any rough edges. • Add new features: small, self-contained enhancements (e.g., daily puzzle, simple reward loop) integrated with the current data file. Acceptance criteria • Consistent, lag-free gameplay at or near 60 fps on mid-range hardware. • No critical issues flagged by Xcode Instruments or Android Profiler. • Final builds that pass App Store and Google Play submission checks. I will provide the original project, asset bundle, and database as soon as we begin so you can start profiling and refactoring right away.