Apple’s App Store had 78% margin in 2019, says Epic Games expert Bloomberg May 2 | Updated on May 02, 2021 Epic is trying to show that the App Store is run like a monopoly Apple Inc’s App Store had operating margins of almost 78 per cent in fiscal year 2019, according to testimony from an Epic Games Inc expert witness based on documents obtained from the iPhone maker. The figure comes from Ned Barnes, a financial and economics researcher, who said he obtained documents “prepared by Apple’s Corporate Financial Planning and Analysis group and produced from the files of Apple CEO Tim Cook.” Apple is disputing the accuracy of Barnes’s calculations — and urging a judge to restrict public discussion of App Store profit — as the companies head into a high-stakes trial Monday in Oakland, California.