After a lot of confusion earlier this year, Apple today finally clarified its rules for in-app subscriptions for magazines, newspapers, video and music. The rules are very straightforward: Publishers can continue to sell digital subscriptions on their own websites and give free access to existing subscribers. Apple will not take a cut from these transactions. Publishers who offer out-of-app subscriptions, though, also have to offer in-app subscriptions and the price has to be the same or lower than for subscriptions processed outside of the app. Apple will take a 30% cut from these in-app transactions.