As the name implies, this app is for making photo collages and the like.
RH: This is the fee version of the entry level and "lite" versions. Unless you do a lot of work with any app, the free version will probably do fine. After you see what the free version limits are, you may want to upgrade. I have used this to make collages of my students and their work. It works very well for documentation and it is quick and easy.