Grades K to 5 Kids Math GamesStudyPad, IncSplash Math is a comprehensive and curriculum aligned math program which reinforces math concepts using self-paced and adaptive practice. 390+ math concepts (Kindergarten to 5). Expensive with subscription rates at $9.99 mo. or $79.00 yr., but covers numerous concepts.Tags: Math, Multi-ConceptAvailable For: iPhone (Free)iPad (Free)