Apple confirms 65% of iPhones and iPads run iOS 11, less than 30% are still on iOS 10
Today, Apple published statistics about the iOS 11 adoption, as well as how the previous versions of the operating system performed in comparison. It's true that fragmentation exists in the world of Apple as well, but not at the same level as Google's Android.
These numbers were measured by the App Store on January 18, so the information is a fresh as possible. The good news is those numbers will only grow as Apple users continue to switch to newer devices or new customers jump on the iOS bandwagon.
In comparison, Apple announced exactly one year ago that 76% of iPhones and iPads are running iOS 10, which was the newest version of the platform at that time.