Mobile App UI Feature Development

I need help adding a brand-new user-interface element to my existing mobile app. The focus is strictly on UI—no backend work is required. I will share screens, brand guidelines, and component specs once we start, and I’d like you to deliver clean, maintainable code that slots straight into the current project structure.

Please build the interface so it feels native on both iOS and Android, with smooth transitions and touch-friendly controls. If you work with tools such as React Native, Flutter, SwiftUI, or Jetpack Compose, let me know which you prefer and why; I’m open as long as the end result looks polished and performs smoothly.

Deliverables
• Finished UI feature integrated into a test build
• Source files and any asset exports
• Brief hand-off notes explaining key components and style choices

I’m ready to move quickly, so tell me how soon you can start and an estimated turnaround once you see the current codebase.