Apple PR:

Apple today announced that customers spent over $10 billion on the App Store in 2013, including over $1 billion in December alone. App Store customers downloaded almost three billion apps in December making it the most successful month in App Store history. Apple’s incredible developers have now earned $15 billion on the App Store.

In the press release, Eddy Cue calls it “the best year ever for the App Store”. Apple said that developers updated their apps for iOS to bring “content to the forefront while increasing the overall efficiency and performance of their apps” and it notes that several hits of the year were created by developers outside the US. In terms of numbers, Apple confirms that over a million apps are available on the App Store, with 500,000 made for iPad.