New mobile app design

I am looking for a freelance designer who can make a new, simple, stunning, great-looking UI for my lifestyle app. I have 5 main screens I wanted to design and some smaller, very simple screens.

All is described in a Word doc with scope and page descriptions. The app is live now on the app stores and is called "Encore Rewards". I am tweaking the concept a little to add f.x. videos to make it more social etc.

The main color should be white ie. the background should be a white and simple design,