应用程序备份是备份你的应用程序非常有用的应用程序，并保存到SD卡
* App Backup allows you to export installed applications to apk and store to : /SDcard/AppBackup (.apk files)
* Very easy to use: ONLY BY 1 CLICK
* NO ROOT access required.
* Extracts all most all application,includes system applications.
* Apk files will saved in: SDCARD/AppBackup