iLeader defends iGiant's app oversight to keep people safe from 'toxic mess' Share Copy Apple CEO Tim Cook testified in defense of his company on Friday in an effort to retain control over its iOS ecosystem, deflecting tough questions from US District Judge Yvonne Gonzalez Rogers. Last August, Epic Games, maker of Fortnite, sued Apple alleging that the iPhone maker illegally monopolizes iOS app distribution and payments. Epic hopes to convince Judge Gonzalez that Apple is violating antitrust law by imposing rules that force iOS developers to distribute through the iOS App Store and to rely solely on Apple's in-app payment system.