Here’s an interesting way to hack IAP in the AppStore, reported by Kevin from ablepear.com.  Am surprised this is possible.

• Group: iPhone Developers - www.iPhoneintouch.com
• Subject: New comment (14) on “Are “in app” purchases successful?”

I especially like the model that Storm 8 impliments – and it’s a strange one indeed, but works around a “limitation” of the in-game “store-kit” limitation. That is to say that, as Steve Jobs said, “Free games remain free.” So there should be not charge to this. Well Storm 8 has a series of games that have made it into the top 10 several weeks running. The game is free, but there is a certain type of currency that you can purchase “in-game”.

The currency comes in the form of an additional app you download from the App Store, basically the same app with a little hook to say that your account has downloaded one of it’s packages and to add a certain number of “coins” to you main account. Once this has happened you can delete the “second” game or the “first” as they are both the full game.

A very interesting use of the app space and somewhat bypasses the in-game purchasing.