A free program for Android, by Magic Photo Collage Design.

Create a collage from your photos! It’s an application to help you combine multiple photos into one beautiful collage. The app can combine photos from your gallery as well as add some stunning backgrounds. The collages can be saved to your gallery and shared on your social networks such as Facebook, Twitter, or Instagram. It’s easy to use! All you need to do is just select the photos you want to add and then select the background. After that, you can choose the layout and add some text. There are many collage templates for you to choose from. There are also some unique stickers that you can find only in this application.