Hacker News Reader

From data we've collected[1] more iOS devices (the majority) are running the most recent version of the OS, compared to Android.

Even though they may have an update available (non-eligable devices excluded) not every user knows how or is able to update their device.

  [1] http://blog.brightcove.com/en/2011/10/brightcove-unveils-next-generation-video-cloud-smart-player