App Backup can back up your installed apps and app data on local storage
and duplicate a copy to the external storage to save your backup files. App
Backup can also restore your installed apps and app data after updating your
device to make sure your data will not be lost.
App Backup cannot restore apps that require an account authentication.
If you encounter problems, please clear data for the apps via the path:
Settings> Apps and log in again.
To use App Backup:
Tap on App Backup from the Apps Menu.
The Backup List shows the installed applications on your Transformer
downloaded from the Android market. Tick on the apps you want to
back up and tap on Backup on the upper right.
Insert a MicroSD card or other storage devices if necessary. Click on
File Manager at the lower right of the dialog box to select the external
storage location to duplicate backup app files.
Key in the file name of new backup file to create and select OK.
Backup files are automatically stored in App_Backup folder in internal
storage and selected external storage.
ASUS Transformer Manual