Baby Sign Language Dict. Demo I've heard that parents can teach their children sign language before they learn how to speak and this leads to less crying and tantrums. No more terrible two's? This app includes video of basic signs as well as a quiz. Recommend!
Sign Language! A decent sign language primer that includes ABC's, 123's, sentences and idioms/phrases. Recommend!
Baby Sign and Learn Lite Learn sign language from these awesome virtual babies. Start with simple nouns that are easy for children to learn. This app also comes with quiz mode. Recommend!