Apple today announced that customers spent over US$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. The company says developers have now earned $15 billion on the App Store.

“We’d like to thank our customers for making 2013 the best year ever for the App Store,” Eddy Cue, Apple’s senior vice president of Internet Software and Services, said in a press release. “The lineup of apps for the holiday season was astonishing and we look forward to seeing what developers create in 2014.”