What good do a photo collage? To represent something is very useful. If a picture is worth a thousand words, then imagine how useful it can be a combination of images. That's PicFrame, the app Android (also available for IOS) that allows us to make a collage with several photos. In these pictures we can make some small changes and then use up to 5 to assemble the collage and the way that we like.
Of course, this task can be done in a computer,but we do PicFrame quickly, and it is easier to carry with us a smartphone than a laptop.
PicFrame costs $ 1 in Google Play.