Hello,
To be honest i'm new to mobile design but i have background experience in media and commercial design, Till now i worked on four local applications in Egypt two of them are small <less than 5 screens> and two of them are considerably large <more than 10> and a lot of template applications to develop my skills. That's not my final price because i can make the design from 100$-300$ based on the size of the application because i'm looking for feedback and building my profile as a freelancer more than money. I can send you sample of my work if you needed to and for sure i'm looking forward to help you get the work done.
Wish you best luck.