Here are more details about the project:
1. Android App Store like Amazon, Yandex, SlideMe etc.
2. The APP will be with payments.
3. The Android native application will be based on an already developed APIs
4. What is needed is only the Android part.
5. In addition to the app store itself, we need the android API we should give to apps developers in order to be able to connect their apps with our apps store (Register, Login, Payments).