Units
Mode
Boxes
Box 1: now · 2: in 10 min · 3: in 6 h · 4: in 2 days · 5: in 6 days
Readiness by unit
Five Leitner boxes, saved in this browser. A term you know moves up a box and comes back later. A term you miss drops to box 1 and comes back in this session.
Box 1: now · 2: in 10 min · 3: in 6 h · 4: in 2 days · 5: in 6 days