I've seen this done before with apps that I use, but I was wondering how it would be possible to share IAPs between an iPhone and iPad application. More specifically, I want to make sure that users that make a purchase in one app, do not have to re-buy the same product in the other.
I've read in a few places where this could only be accomplished with a universal app, but I wanted to see if this was, in fact, the only way that it could be done.