According to data collected ending on Feb. 2, 72-percent of Apple devices have updated to iOS 8, while 25-percent are still running last year’s iOS 7 update (3-percent have clung to iOS 6 or earlier; why?).

The figures are based on App Store distribution data, which measures the percentage of iOS devices accessing the App Store and which OS those devices are running. In this case, iOS 8 adoption has actually gone up slightly since Apple last reported data two weeks ago—from 69-percent up to yesterday’s 72-percent; before that, iOS 8 adoption was around just 68-percent.

The data shared by Apple highlights a slower adoption rate compared to last year’s iOS 7 release, which introduced the software’s largest update since the original iPhone hit. With iOS 8, Apple has had to endure problems with bungled incremental fixes and storage hurdles, which could be why not as many people have updated. Data from Mixpanel found that iOS 7 adoption was roughly 85-percent during the same period a year ago.

Apple recently released iOS 8.1.3, promising to fix bugs and take up less space on a user’s device. Whether that’ll have a significant impact on adoption remains to be seen. With the Apple Watch hitting this April, I’d wager more devices will make the jump to the company’s latest software sooner rather than later.

In contrast, since Google released Android 5.0 Lollipop in November, the software has only been distributed to 1.3-percent of devices.