Having erased the background from the image, you can easily make use of the image as stamps with any other app to make photo montage, collage. This is an enhanced feature and you get to run any other photo editing task on android, even without the help of computer’s Co rel draw.
Recently, I came across an android app code name “Background eraser”. This app helps to erase background from an image by cutting or trimming the main character on the image and placing the image on a transparent background.