As has become the norm after a new iOS launch, Apple has been keen to crow about the high adoption rate for iOS 9. The company recently claimed that in just three days, more than halfof iPhones, iPads and iPod touches had iOS 9 installed. Seems a little high? You’re not alone in feeling that way. Has Apple massaged the figures about iOS adoption rates?

While there are many reasons to make the upgrade to iOS 9, the 50 percent figure is not in line with measurements from other sources. It’s fair to say that only Apple has access to the real raw data, but Apteligent suggests that on the measurement date of 19 September used by Apple, adoption of iOS 9 was possibly less than half of what’s been claimed.

Apteligent used data gathered from tens of thousands of apps in the App Store, amounting to billions of installations. Using this data, the company measured a 23 percent install rate for iOS 9 — a figure that is in line with the findings of mobile marketing company Fiksu.

Analysis performed by a third company,MixPanel, placed the adoption rate slightly higher at 29 percent, but this is still well below the claimed 50 percent. MixPanel also determined that just over 12 percent of usershad made the upgrade after 24 hours. Apteligent is quite blunt in its questioning of Apple’s figures published in a press release:

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