Review your words to grow a garden, each one you remember blooms, and each you forget returns as a weed.
Every word is a plant with a growth stage. Answer a review correctly and the plant grows, its next review pushes further out. Miss it and it resets to a short interval and sprouts back into this session as a fast-decaying weed you must clear again. The session ends only when every plant has reached full bloom with no weeds left.
Forget-Me-Knot turns spaced-repetition vocabulary review into a living garden, so words stick for the long term.
Words as plants whose next review pushes further out when you succeed and resets when you fail is spaced repetition, and the interval scheme is the Leitner system made visible.
Rendering the schedule as growth is the original metaphor.
The schedule follows the forgetting curve, Ebbinghaus's finding that memory decays rapidly and then levels off. Reviewing just before you would forget is what flattens it, which is why expanding intervals beat the same total time spent cramming.
Forget-Me-Knot is an original, free browser game that turns spaced-repetition vocabulary review into a living garden you tend. It is built in-house and needs no install.