This application will help you to get easily back to ".apk" file with its original form which you've installed on your device. And that installed application no longer exist as ".apk" file on your device so anyway or somehow you want it back or to keep it back as ".apk" file and don't want to download it again from internet, only want from your installed list by one click. Then you should use this. This application is very simple and easy to handle.

To use this you don't need internet connection or any wifi or root on your device.