How much for that app? US top court hears Apple antitrust dispute

People look at iPhones at the World Trade Center Apple Store during a Black Friday sales event in Manhattan, New York City, U.S., November 23, 2018. REUTERS/Andrew Kelly/File Photo

When iPhone users want to edit blemishes out of their selfies, identify stars and constellations or simply join the latest video game craze, they turn to Apple Inc's App Store, where any software application they buy also includes a 30% cut for Apple.

That commission is a key issue in a closely watched antitrust case that will reach the US Supreme Court on Monday. The nine justices will hear arguments in Apple's bid to escape damages in a lawsuit accusing it of breaking federal antitrust laws by monopolising the market for iPhone apps and causing consumers to pay more than they should.