The fun way to make a collage is to use your fingers!
Make a mess of your photos!
Show everyone your photo mess or place multiple photos together to get the "bigger picture"!
Simple and intuitive main menu - [+] to add, [-] to remove, [↑] to share.
Photos placed on the screen can be:
1) moved around with one finger
2) rotated and scaled with two fingers
3) double tap brings up a menu of options
Have fun!