If you want to get dollars easily with the free android app:

 1. Download application whaff on your smartphone, looking at playstore

 2. Install and open the application

 3. Login using your facebook account.

 4. Enter the following invitation code BX94547 to $ 0.8

 5. Download and play application is available for free to get dollars

 6. Gather up your balance reaches $ 10

 7. Turn the balance with Paypal