Develop VoIP Android App

Develop Mobile App VoIP App. I will provide Account and Pin for app to use. API that allows for User account creations, rates search, recharge request. App needs to do the following. 1. Use the provided account and pin 2. Ability to register users 3. Ability to search rates. 4. Ability to buy minutes and pay via paypal or credit cards. 5. Once paid send request for recharge (this part is done manually)