"Lexico-Cognition is an App to develop language understanding, vocabulary building, cognitive, memory and auditory skills in a playful way. It was developed and tested by qualified speech therapists. "
This is an evidence-based app to support speech and occupational therapists as well as special education instructors or parents looking to support their children. It is pricey - $39.99 - but that is less expensive than computer based versions of similar products.