My consumer app is already live on both iOS and Android, yet the interface feels dated and certain screens stutter under load. I want to relaunch with a fresh, modern UI and noticeably faster performance. I’ll supply the current source code, store links, and the color palette plus rough sketches I’ve been experimenting with. There’s no strict style guide, so I’ll count on your design instincts to translate these ideas into a cohesive system that respects both Apple HIG and Material standards. The job will involve: • auditing the existing codebase, • creating and iterating on high-fidelity designs until we sign off, • implementing the new look, and • tuning the app so animations stay smooth and launch times drop. You’re free to recommend the best approach—native Swift/Kotlin refinements or a smarter cross-platform layer—so long as the end result runs flawlessly on current App Store and Play Store requirements. Acceptance criteria • Visuals match the approved mock-ups pixel-perfectly • App launch time improves by at least 30 % on mid-range devices • Scrolling and transitions maintain 60 fps • Final builds pass App Store and Play Console checks and are ready for submission Once you review the current build and outline your strategy, we can lock in milestones and start moving.