Apple has blocked Fortnite on both the US App Store and the EU's iOS version of its Epic Games Store, despite Epic submitting the game after winning a court case against Apple.
Fortnite had been available on iPhones in Europe since August last year due to EU rules allowing third-party iOS stores.
Epic CEO Tim Sweeney criticized Apple for using App Review as a tool to obstruct competition, but Apple has not commented on the situation.
The conflict between Apple and Epic revolves around profit-sharing, with Apple wanting a share of sales through its App Store and Epic preferring to retain its revenue. The latest Fortnite version included payment systems for both Apple and Epic's store.