This trend was apparent starting just three days after iOS 15 was released on September 20th. At that time, 8.5% of eligible iOS users had updated to the latest build compared to the 14.5% that updated to iOS 14 three days after the latter was introduced last year. By the beginning of last October, the adoption rate was shockingly lower at 21% compared to the 40.51% that had adopted iOS 14 during the same time during the previous year.
The adoption rate of iOS 15 is down compared to last year’s iOS 14 adoption
Adoption rates for the Apple iPad and iPadOS
Apple collected the information from devices that made a transaction from the App Store on January 11th, 2022.