Fuzel is a great (FREE) app that puts all of your photos into a collage. They have tons of fun templates that you can shuffle through and you don't have to do any of the work! No more picking a template, finding the photo, editing the photo, and then exporting it. It even lets you individually swap pictures, edit pictures, and put on customizable filters. You can export your digital scrapbook to any number of social sharing sites such as facebook, tumblr, twitter, and instagram!