The number that most shocked me, is regarding how active the iOS App Store catalog is. Tim Cook said 93-percent of the entire iOS app catalog (over 900,000 apps) is downloaded every month. Or, put another way, of the 900,000 apps in the iOS App Store, 837,000 of them are downloaded at least once a month.
Obviously nobody is going to make a living selling a single copy of their app each month, but it’s impressive nonetheless that if you’ve got an app in the App Store, your chances are 9 out of 10 that it will be downloaded every month.