Revamp iOS/Android Word Puzzle

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.