More and more Apple users are adopting iOS 7, according to the report Apple shown on its support page for developers. Apple iOS 7 (including iOS 7.1) have reached the 85 percent mark, while iOS 6 has dropped to 12 percent. The numbers are based on the usage of the App Store.
Apple first published the iOS numbers based on App Store usage back on December 1, 2013. At that time, 74 percent of users were using iOS 7, 22 percent were using iOS 6, and 4 percent were using earlier versions.
Source: The Next Web