Apple doesn't allow third-party e-book readers like Google Play Books to offer users direct purchases without taking its cut.

Apple device owners that use Google Play Books to manage ebooks can now make purchases via a "Get book" link that takes them to the Google Play store to make a purchase.

Google has gained permission to sell its e-books and audiobooks directly to customers through its iOS app, Google Play Books. While iOS apps today can ...

Google Play Books for iOS is now supporting Apple’s “reader” apps exception for providing external links to buy ...