Sumdog

Sumdog delivers engaging personalized practice for math and spelling, with an adaptive learning engine that assesses learners via a diagnostic test and places them at the right level. It offers 30+ engaging single- and multiplayer games, thousands of standards-aligned questions, virtual rewards, and a customizable 3D avatar system to motivate regular practice.

Children can log in through their school account or via a family plan for up to 3 children. Subscriptions begin with a free trial and then transition to a monthly plan from $8.99, with automatic renewal unless disabled, making Sumdog suitable for home and classroom use.