A free program for Android, by Easy Object Remover Background Eraser Studio.

Photo Background Changer is an app that lets you remove, change, or add a background to your photo. It is a very easy-to-use application with a user-friendly interface. This app is completely free of cost and you will be able to use it without having to pay a penny. It is one of the best and most popular photo editing apps available in the Android app store. You can remove or change the background of your photo in a few seconds and the results will be more than impressive.

You can crop your image and remove or change the background.