Story Me (iPad app)

This free iPad app allows you to turn your photos into a comic strip.  With a variety of layout options, users can import photos from your camera roll, add cartoon effects, speech bubbles, etc.

When your project is complete, users can save to the camera roll, email, or share on Twitter or Facebook.  A great feature is that you don't need to create accounts to use Story Me, making this a great classroom friendly app.