[jmknoll]

Just to add a bit of info... in-app purchases are required for things like extra functionality. On the other hand, if you’re using the app as a gateway to a service that is provided outside of the app, you can process payment outside the app. Anyone who can reasonably make this argument tends to do so, as Apple charges ~30% of everything that goes through in-app purchases.

[fipple]

What apps are in the gray area? To me it’s pretty clear and not much room for “making an argument.”