ANTON is described as 'is the free learning app for elementary school. A complete all-in-one curriculum for all subjects: reading and writing, math, science, languages and music for kindergarten to grade 4' and is an app in the Education & Reference category. There are three alternatives to ANTON for a variety of platforms, including Online / Web-based, Android, iPad, iPhone and Android Tablet. The best alternative is Khan Academy, which is free. Other great apps like ANTON are Brilliant.org (Freemium) and Ixl (Paid).