Photo Grid is an incredibly simple app for creating good-looking collages from your images. Although the results are largely dependent on the quality of your original snaps, we found it could jazz up even a selection of pretty boring photos.

Our verdict:

We love Photo Grid. It can work hand in hand with Instagram to quickly produce beautiful results from your amateur photographic efforts, and its interface is so intuitive that anyone will be able to master it. It may be a one-trick pony, but Photo Grid is very good at what it does.