Apple has announced that customers spent more than $10 billion (£6.1bn) on apps in 2013, making it a record-breaking year for Apple's App Store.
December was the most successful month in App Store history, with Apple users downloading almost three billion apps during that month alone and contributing $1 billion to the $10 billion total for the year.
In a press release sent out on Tuesday, Apple's senior vice president of internet software and services, Eddy Cue, said: "We'd like to thank our customers for making 2013 the best year ever for the App Store. The lineup of apps for the holiday season was astonishing and we look forward to seeing what developers create in 2014."
In total, developers have earned $15 billion from the App Store, according to Apple.
In the iOS App Store there are more than one million iPad, iPhone and iPod touch apps available to download in 155 countries. Around half of those apps are native iPad apps.
May 2013 saw the 50 billionth app downloaded from the iOS App Store since it was launched in 2008.