iASL is a video dictionary of 5800+ signs, a custom grammatically correct ASL translator (translates sentences up to 5 words), and conversational phrase book, all rolled into one app! iPhone/iPod touch: https://itunes.apple.com/app/iasl-translate-english-to/id362030677?ign-mpt=uo%3D4=8 iPad: https://itunes.apple.com/us/app/iasl-translate-english-to/id364176106?mt=8
It is a video translator that transforms words into sign language. You simply type in the word and watch a video clip of a person signing. There are 3,500 signs that include numbers, letters and pronouns.