MyTalkTools Mobile is a next-generation AAC app that helps people with communication difficulties say what they want with sequences of words, sounds, and images by choosing the content (simple grids or boards with bold images) and playing recorded sounds when you touch a cell. The sequences can even form complete sentences. It can be personalized Simple drag-and-drop editing helps create boards in minutes.
http://www.mytalktools.com/dnn/2/Products.aspx