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In statistics shared with developers on Monday, Apple revealed distribution of the latest iOS 9 mobile operating system now stands at 75 percent, a number up 5 percent since the last check in November.

According to Apple's latest iOS App Store checks, published to the company's developer , 75 percent of compatible devices are running some ilk of iOS 9. As iOS 9 distribution increases, older operating system share decreases, with 19 percent of users on iOS 8 and another 7 percent running older OS versions.

In November, iOS 9 share was pegged at 70 percent, growing at a rate of about 1 percent per week, roughly in line with current projections.

Adoption of Apple's current iOS is far outpacing that of its iOS 8 predecessor, which only managed to eke out a 68 percent distribution rate at the same time last year due to a botched point update that brought adoption to a standstill. It took iOS 8 some six months to make it onto 77 percent of compatible devices.

Looking forward, Apple on Monday released a feature-packed iOS 9.3 beta that should drive adoption even higher. The test build is one of the more substantial point updates in recent memory and includes a new nighttime viewing mode called Night Shift, secure Notes and various educational tweaks for iPad like user profiles.