Publish iPhone and iPad apps through the Apple Developer Program - 99 dollars a year, with commission of 15%-30% on sales.
developer.apple.comEpic PC store with open self-publishing and a creator-friendly 88/12 revenue split for developers.
store.epicgames.comPublish Android apps and games to billions of devices - one-time 25 dollar registration, with Google taking 15%-30% of sales.
play.google.comThe dominant PC game store - publish via Steam Direct for a 100 dollar fee per game, recoupable once it earns 1,000 dollars.
store.steampowered.com