iOS 6 (60%) vs. Android Jellybean (10%) - Version Adoption
There's an interesting case to be made about android devices marketshare.
An article posted here http://doughamlin.com/blog/ios-vs-android-version-adoption/ talks about this issue.
Google's developer website posted this pie chart and table that is based on the number of Android devices that have accessed Google Play within a 14-day period ending on the data collection date noted below.
Apple has sold more than 500 million iOS devices, and iOS 6 is on 60% of all of those devices with almost 300 million iOS devices running iOS 6.
The above android chart shows Google's data for its Android adoption, with only about 10% using the latest Jellybean versions of 4.1 and 4.2, while 60% of iOS users are using iOS 6.
Almost 48% of the users are still using gingerbread.
Jellybean is a great android version, but when only 10% of the users are using the latest version, then I can understand why many companies still prefer to develop for iOS first. This will always be the case since the adoption rate for the latest iOS is very quick and with an eventual jailbreak might even increase to more than 70% as many other users find this reason to be necessary for upgrade.