The google play in-app-purchasing mechanism charges 30%, just like apple does. However, Google play allows you to use your own payment processor for "digital c

The google play in-app-purchasing mechanism charges 30%, just like apple does. However, Google play allows you to use your own payment processor for "digital content that may be consumed outside of the app itself", when the app is not a game. Apple requires that all purchases, no matter what, go through their IAP process so apple gets a cut.