iPhone and iPad users can only download native (non web-based) apps via the App Store.
The Commission will investigate in particular two restrictions imposed by Apple in its agreements with companies that wish to distribute apps to users of Apple devices:
(i) The mandatory use of Apple's own proprietary in-app purchase system “IAP” for the distribution of paid digital content. Apple charges app developers a 30% commission on all subscription fees through IAP.
(ii) Restrictions on the ability of developers to inform users of alternative purchasing possibilities outside of apps. While Apple allows users to consume content such as music, e-books and audiobooks purchased elsewhere (e.g. on the website of the app developer) also in the app, its rules prevent developers from informing users about such purchasing possibilities, which are usually cheaper.