I know there are questions posted elsewhere about how to implement in-app purchases on iPhone and Android, but none answer the legality of the solutions today. At the time of release, there was some dispute over whether some of these solutions violate terms of service, but it’s now several months later. There are also now several exceptions like Amazon, which seem to circumvent iTunes for purchases.
Anyone have a definitive answer?
It seems that the App Store has two main rules when it comes to in-app purchases (IAP):
Amazon is Ok on both these, but I don’t know enough about the Zong, Paypal or Boku apps.