123 Order – Lite is a perceptual training and math skills tutorial program designed for use by parents or teachers working with children with developmental disabilities or autism. This application (or app) allows a parent or teacher to use their Apple iPhone, iPod Touch or iPad or an Android device to teach a child number sequencing using a set of three or four numbers. Full number sequences are shown in a training session, and then the child is asked to identify the last number in a sequence, choosing from four possible answers. Each correct response is rewarded with a cheerful animation. After the child answers the final question, a score screen appears, followed by another animation. Scores are recorded in the app for progress tracking and analysis purposes, and for assignment customization. Available languages include English, Chinese, Czech, Dutch, French, German, Italian, Japanese, Korean, Polish, Portuguese, Russian, Spanish, Swedish and Turkish. COMPATIBILITY: For use with an Apple iPhone, iPod Touch, iPad, or Android device. SYSTEM REQUIREMENTS: Apple iOS 4.0 or later, Android 2.2 or later.