As of the end of 2013 , App Store users spent over $ 10 billion in 2013 , users downloaded almost three billion apps in December 2014 making it the most successful month in App Store history , and App Store developers have earned over $ 15 billion since the inception of the App Store .
As of the end of 2013 , App Store users spent over US$ 10 billion in 2013 , and users downloaded almost three billion apps in December 2013 . This was the most successful month in App Store history , and developers have earned over $ 15 billion since the making of the App Store .