The public release of iOS 9 got off to a rocky start yesterday but it appears that Apple’s problematic servers didn’t stop the big software update from gaining faster adoption in the first 18 hours than iOS 8.
Even though iPhone and iPad users are downloading iOS 9 at a slightly faster rate than they installed iOS 8, the number crunchers at TapyJoy found that iOS 9 is still lagging way behind iOS 7’s adoption rate.
Check out the race in the comparison chart below:



![We’re Amped About These New Charging Bags From Voltaic, Powerbag [CES 2011] Get a move on...to iOS! Photo: Apple](https://www.cultofandroid.com/wp-content/uploads/2015/09/Move-to-iOS-940x717.jpg)