“Offers In-App Purchases”
iOS 7 introduces a seemingly small, but very significant, addition to the IAP world - a digital receipt in every app (free or otherwise) that includes the version number when the customer originally bought the app.
With this new addition, for the first time it’s possible to move an app from paid-for to freemium (or lower-cost-with-IAP), whilst reliably ensuring the customer is able to access the features they originally bought. The receipt - something Mac developers already deal with on the Mac App Store - always returns the original version the customer purchased, even in the event of a reinstall.
