And now it's launching the store for Macs.
Apple has announced that its App Store has now passed the seven billion downloads milestone, up from 6.5 billion at the start of September.
That means the store is currently doing 10 million downloads every day - more than Android Market, BlackBerry App World and Android Market combined.
(There's some debate over which of these stores include updates in their totals and which don't, it should be noted).
Apple CEO Steve Jobs revealed the big number last night at a product launch, which also saw the unveiling of an App Store for Mac computers.
Due to launch in 90 days' time, it will work much like the iOS version, allowing Mac users to browse, buy and install apps, with developers getting a 70% cut of the revenues.
The move may well spur a number of iOS developers to port their existing apps across. Firemint has already announced that Flight Control HD will be 'coming soon' to the Mac App Store, for example.
Apple also showed off new MacBook Air laptops at the event last night, as well as the latest version of its OS X operating system.
The company is also launching a FaceTime desktop application for Macs, allowing people to video-chat with their iPhone and iPod-touch owning friends.