In-app purchases are a way to lock specific pieces of content within your app. If you are choosing not to offer subscriptions, but still want to lock access to your content with a purchase, you can price each feed or piece of content with an in app purchase.
After adding content or a feed, click the Settings button and set the "Access" to "Locked." You can then indicate that the content will be unlocked by an In-App Purchase and set the price of that purchase.
