Mathy

Mathy is a free app designed to help users build math automaticity by drilling previously learned math facts and procedures using spaced repetition. It supports iOS and web, works offline on mobile, and focuses on short mental recall practice rather than teaching new concepts. Mathy employs FSRS algorithm to schedule practice sessions and includes gamified features such as levels, XP, and timed challenges. Progress is stored locally without requiring an account, though future plans include optional sync and multiplayer features.