Apple released a list of the all time most popular free iPhone apps.
Since the free apps generally see many more downloads than paid, this is likely the a list of the most popular iPhone apps of all time, free or paid.
Why give away an app? Because you can charge money for advertising. Or, in the case of Facebook, you can extend your desktop lead on the mobile side.
Read on to see which applications are king of the App Store.
Bump exchanges your contact information with someone else over Bluetooth by literally bumping your phone into hers. No more clunky, 'Here's my number. Call me right now so I can save yours.' Trade numbers with a fistpound!
Use Movies by Flixster to watch trailers, read reviews, and get showtimes on movies while you're out and about. You'll never be bummed out by spending $12 on a bad movie when you can lean on this free app.
Shazam is the closest thing to real magic you'll ever see on a phone. You're out at a bar or a party and there's a song playing that you don't recognise. Simply hold up your phone, let Shazam hear the music, and it will tell you the song, artist, and album.