A free app for Android, by Expert Zone.

If you want to make a backup of all your important calls, you should download the Automatic Call Recorder app. It can help you do that with ease.

How does it work?

When you start the app, you will see a menu on the top right side of the screen. You can choose one of the options that are available in the app.

 You can choose to record calls, add contacts, or even add phone numbers.

You will see a new menu on the top right side of the screen.