A free app for Android, by CollagePro Apps.

Photo Collage Frame – Editor is a handy app for you to create cool photo collages. With hundreds of layouts, you can easily make a beautiful photo collage with a grid size, a border, a background, a filter, a sticker, a snap, and text. You can also choose from different types of layouts. 

The app is very easy to use and has a friendly interface. It also provides you with a number of editing tools such as background, square, blur, beauty, filter, curve, sticker, text, and more. The best thing about the app is that it’s free and you don’t have to pay to use it.