AppBackup - save/restore App Store apps settings and data

AppBackup is a program for the iPhone/iPod touch that lets you back up and restore the saved data and settings for your App Store apps.

To back up one app, open AppBackup, select the app, and then select Backup. To restore an app, select it and then select Restore. (If there is no restore option, then it hasn't been backed up yet.) To back up all apps at once, tap All at the top-left of the screen, and select Backup. To restore all apps that have been backed up at once, tap All and select Restore. (You must have at least one app backed up in order to see this option).

Avaliable for free via Cydia Istaller.

A jailbroken iPhone or iPod touch running iPhoneOS 2.0 or later, with Cydia and at least one App Store app.