In AdMob’s latest survey, iPhone users were the most likely to purchase paid apps, with 50 percent buying at least one per month. Users of the iPod Touch came in second at 35 percent, followed by Palm WebOS (24 percent) and Android (21 percent).
When you also consider free apps, iPod Touch users downloaded the most apps per month, with an average of 12.1. That was followed by iPhone users with 8.8 downloads per month, Android users with 8.7 downloads per month, and WebOS users with 5.7 downloads per month.