The description of sok-edit
● Easily cut & combine images and share the result.
● Designed to be simple, cute and fun to use.
● Suitable for kids, cool teens and adults.
The free version of the app has a limit on the amount of pictures you can put into a single collage and a tiny watermark, but other then that are no limitations. If you buy the premium in-app purchase you can load unlimited pictures and remove the watermark forever.