Three out of four compatible Apple devices are running on iOS 9

75% of compatible Apple devices have iOS 9 installed
Apple computed the adoption rates by tracking iOS devices that entered the Apple App Store yesterday. The Adoption rate should move even higher once iOS 9.3 is released. Apple is adding some interesting features with the build. As we told you the other day, Night Shift will make the iPhone and iPad screen easier on your eyes starting at sundown, making it easier for you to go to sleep. Another new feature, Notes, allows you to keep a virtual pad with important information "scribbled" on it. The information is secure since is accessible only via a fingerprint match, or by typing in a password. This morning, we told you about Auto-Switch, which allows a person who owns more than one Apple Watch, to pair all of them on a single Apple iPhone.
Apple's high adoption rate stands in stark contrast to the latest Android distribution data which shows that Android 6.0 is on just .7% of Android devices. Android 4.4 KitKat, two generations old, has the highest adoption rate among Android builds at 36.1%. Comparing iOS and Android adoption rates is not a clean cut task. Apple is the manufacturer of the iPhone and develops iOS. Android has many different manufacturers building handsets with the Android OS coming from Google. Most of the phone manufacturers have their own UI that runs over Android, which means that not all Android phones can be updated to the latest build at the same time.
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source: Apple
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