A study in attention.

Sharpen.Adaptive language tutor that models your cognitive state.

2026AI · Learning science · Full-stack

0121 canvasesExercise types

02FSRSAlgorithm

03Thompson samplingSelection

— The forgetting curve —unreviewed vs. reviewed retention over a week

— The premise —

Most language apps drill cards. This one studies the student.

— Why it's interesting —

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