App Backup is a great tool that allows you to easily and quickly backup, install and uninstall your applications. 

It even supports SD cards, so you can set the app save location to any folder on your device, be it an SD card or phone storage. 

It also provides the ability to save an installation file to your SD card or share it to your online storage or contacts. 

What's more, you can also batch backup, install and uninstall applications, as well as download installation files via your desktop browser. 

With this app, you can quickly and easily backup your installation files to your SD card and access them from your browser.