A free app for Android, by Easyelife.
Photo Collage Maker – Pic Grid is an application that will allow you to create a beautiful and colorful collage from your photos in seconds. The app will give you the option to select from a wide variety of themes that you can choose from and you can even change the background and add your own text. You can even save the collage to your phone’s gallery or share it on social networks like Facebook, Instagram, Snapchat, and Twitter.
The app will allow you to change the colors and layout. You can also add stickers from the sticker library.