ASL Pro is a sign language training program designed for use by individuals with hearing disabilities and others desiring to learn American Sign Language. The program uses illustrations and instructions to teach the signs for 700 words. The words are categorized, and there is Quiz feature that shows an illustration of a sign and asks the user to select the correct word from a list. Users can track their progress by viewing a history of quiz results. COMPATIBILITY: For use with the Apple iPhone, iPod Touch or iPad. SYSTEM REQUIREMENTS: Apple iOS 2.2.1 or later.