Apple has argued that no one at the company has any concept how rewarding the App Store has actually ended up being. Apple executive Philip Schiller, for example, declared under oath that he doesnt know whether the shop makes a profit. However Epic claims it has revealed 3 separate internal files that it says programs Apple does, in fact, track the profitability of the App Store. And Cook was apparently copied on a minimum of among those e-mails. Epic states the companys operating margins are around 80 percent. By comparison, gross margins on the iPhone are around 31 percent.