David Smith on iOS 9’s new space requirements:

I was curious, though, as to how much of an impact this reduction would have in practice. So using the dataset I have from my Audiobooks app I took a look at how many of my customers have enough space for the upgrade.

The result was pretty promising.

He found that 66% of his users had enough free space to install iOS 9 where as only 37% had the amount of free space required for the iOS 8 upgrade. Given the reduced free space requirements and the impressive list of supported devices, iOS 9’s adoption rate might end up being the fastest we’ve ever seen.