UI/UX Designer needed to improve the design of an existing app

Hi,

I need a professional UI/UX Designer needed to come up with a new, youthful and professional design that improves the design of my existing app which we Intend to implement using react native

Our existing app is deployed to https://bit.ly/paytip1 .

This new design is meant to re-envigorate our brand and make it more appealing to young people.

Kindly take a look at our existing app, and come up with new fresh exciting ideas and also show me samples of your past projects

Thanks