A free program for Android, by Video Mixer Video Editor.
If you’re a creative person who enjoys making and editing pictures, then you will love Photo Collage Maker – Pic Editor, a free app that lets you combine multiple photos into a single collage.
You can choose from a variety of collage frames and photo grids, including ones that have been designed to look like a certain style or theme. And you can add various elements, such as text, stickers, or filters.
You can even create your own unique collage by using the freestyle mode. In this mode, you can add any elements you like, and you can use any photo grid or frame that you like.