Company Club LIA created these great apps:
Find the Letters HD, Find the Letters Lite, Sequences for Kids, Patterns by EdNinja, Expressions for Autism, SoundMatch by EdNinja, Sequences for Autism - Full Version, Sorthings, Expressions for Autism - Full Version, Sequences for Autism, Patterns for Kids - Free Version, Club Lia Kinder, Club Lia Plus, Club Lia Kinder: Especial, and others..
