Math
Bearings
mathbearings.com
A math practice app built on one idea: progress is work you can see. It grades the method a learner shows rather than the answer they land on, and a skill counts as held only while they keep proving it.
A pure deterministic core owns curriculum, scheduling, and grading, with storage, rendering, and platform pushed behind ports at the edges. Privacy, offline behavior, and answer-safe hints are properties the tests enforce, not promises the copy makes.
- Pure domain core, platforms at the edges
- Grades the method, not the answer
- Hints that cannot reveal the result
- Mastery decays until re-demonstrated
- Learner records never leave the device
- Offline and privacy proven by tests