The legal battle - started by Epic Games - could determine the future of the highly lucrative App Store.

Epic v. Apple judge Yvonne Gonzalez Rogers just ruled that, effective immediately, Apple is no longer allowed to collect fees on purchases made outside apps and blocks the company from restricting how developers can point users to where they can make purchases outside of apps. Apple says it will appeal the order.

A federal judge has ordered Apple to immediately stop blocking developers from directing users to alternative payment methods, explicitly prohibiting the 27% commission on external purchases and banning warning pop-ups that discouraged users from leaving the App Store.