Vault* Free - Hidden Photo & Video Safe for iPhone, iPad & iPod Touch This app is a neat idea. Just set the alarm and put your phone down. If your phone moves or someone picks it up, the alarm sounds. I like this app, but it would be better if it ran in the background. Useful!

Camera Zoom FREE Wow! Zoom that actually works! Zoom in and out and up and down! And it's free! Highly recommend.

USB Disk Turn your iphone into a USB drive with this much needed app. It's very handy for reading PDF and Word documents and transferring image, audio, and video files.

Aha Radio My favorite feature of this app is that it reads Facebook updates aloud, which is not only useful, it's hilarious! It will also read you traffic and CNN news updates.