The new milestone, which comes 10 months after the operating system's original release, is a three percent increase from installation numbers of 87 percent back in April.
As adoption of iOS 7 has climbed, iOS 6 installation rates have dropped slightly, going from 11 percent in April to 9 percent on July 13. Earlier operating systems continue to run on two percent of devices.
Apple's mobile operating systems have traditionally seen quick adoption rates due to the company's easy over-the-air updates, and just three months after being released, iOS 7 was on 74 percent of devices. iOS 8, coming this fall, will undoubtedly see a similarly rapid adoption rate, overtaking iOS 7 in a matter of weeks.
iOS 8 includes a number of new features that will be highly appealing to consumers, including interactive notifications, third-party keyboard support, and several new Continuity features that allow an unprecedented level of integration between iOS devices and Macs.