What do you think keeps the Apple iPhone faithful so faithful? The main reason could well be the Apple iTunes App Store and their huge amount of iPhone apps.

Recently Apple reached the magic 1 Billion downloaded applications milestone, and that 37 million Apple iPhone and iPod Touch handsets have been sold which equates to an average of some 27 downloaded applications per device according to computerworld.

Obviously some iPhoners haven’t installed any apps while other must have maxed their handset out to the tune of 144 apps which will rise to 172 maximum with the arrival of OS3.