There are snapshots and photo albums, but it seems like there's nothing in between--at least for still images. Except, that's not true.Collages are a great way to showcase a small group of photos that tell a story in a unique way. Instead of relying on a single iconic image or an album stuffed with similar photos to symbolize a complex thought or event, try a handful of images in a unique arrangement to deliver the big picture.We tested nine iOS collage apps--some for the iPhone only and others that run on both the phone and tablet. Most are free; some start out free but offer in-app purchases to augment built-in features. Take note of that if you prefer to order and pay for an app once without being confronted by endless pitches for supplementary materials. Of course, if you don't need hundreds of patterns and backgrounds and extras, it's nice that some apps let you pay only for what you want.These nine apps constitute a small percentage of what's available for the iOS platform, but t
