This year’s Appnation conference revealed that nowadays, one in two mobile owners have a smartphone and that iOS and Android users have almost doubled in a single year and that the 2012 smartphone user is downloading more apps.
It seems that the situation has changed significantly in just a year; the average number of apps on a device rose from 32 in 2011 to 41 in 2012, but this is also a consequence of the more powerful devices that were released during this year. Also, users spend more time using the apps than using the mobile web. As expected, due to the various possibilities offered by Apple to developers, the number of iOS app augmented; same for the number of iOS users who outrun the Android users.
For exact data, check out this infographic from Nielsen.