title: Can i check what iOS apps a user has installed and what in app purchases?
body: <p>I have already released my first iOS app and i'm working on another. I want to be able to give the new in app purchase for free to users who upgraded via an in app purchase within the first app. Is there a way to see a users in app purchase for another app? If not, can i do it so that anyone who has installed my first app, can upgrade the 2nd app for free?</p>