Very simply, Phonto is an app in which you can take/upload a photo and then label your picture. I'm sure there are many other great uses, but for my purposes I am thinking this will be a great app to use to reinforce our non-fiction conventions unit.
Students can easily change the font, color, size and rotation of the font and it was easily shared. In this case I emailed it directly to my blog.
Here's a quick video to show you how easy it really is to use.