Everyone I've seen has very similar numbers: https://mixpanel.com/trends/#report/ios_frag https://mixpanel.com/trends/#report/ios_frag http://david-smith.org/

Everyone I've seen has very similar numbers: https://mixpanel.com/trends/#report/ios_frag https://mixpanel.com/trends/#report/ios_frag http://david-smith.org/iosversionstats/ http://david-smith.org/iosversionstats/ http://stats.unity3d.com/mobile/index-ios.html http://stats.unity3d.com/mobile/index-ios.html David Smith's numbers throw a few more percentage points to iOS 5, but he's a smaller sample size and his stats are two weeks old. Unity is similar, but it looks from the UI that their data is generated monthly. Mixpanel's are the most up-to-date and their numbers mirror Apple's.