Need UX/UI designer for Mobile application

Need Good UX/UI designer for mobile app.
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I have already one UI/UX design of app.(I will provide it)
I want to improve current design with better UX/UI of mobile App.
I can provide more details after selection.

Audio base learning app:
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Some module details.
- Login/Signup
- Course display - Homescreen
- Buy Course - detail of course
- My Courses
- Search Courses
- Audio Player with Topics, Bookmarkm speed..etc
Mobile app with around 10 screens.