PhoneExpander can clear out the temporary files that secretly fill up your iOS device. In about ten minutes, PhoneExpander can make your old phone feel like new again.
All the apps on your device leave behind a residue of temporary files, which PhoneExpander can help clear away. It's got other tricks too, which make it easy to free up gigabytes of room so you can take more photos and download more apps.
PhoneExpander requires a Mac running OS X Mountain Lion (10.8) or newer. The public beta is free to use.