GUIDEDeep dive

Spaced Repetition and the Forgetting Curve

The forgetting curve shows memory decays over time; reviewing just before you forget is most efficient. After each successful recall, stretch the interval (1 to 3 to 7 to 14 to 30 to 60 to 120 days); a failure resets to short-term.

Updated 2026-11-01 · Formula checked

How intervals work

Again: back to box 0, tomorrow.

Hard: keep the box and current interval.

Good: advance one box and stretch the interval.

Daily plan

Start with 5 to 20 new cards and 10 to 50 reviews a day, then adjust.

Streaks matter more than long sessions; ten minutes a day is enough.

FAQ

Can I change intervals?

This tool uses fixed 1/3/7/14/30/60/120-day intervals; the plan controls daily counts.

What if I miss a day?

Due cards pile up; work through them in order, not hundreds at once.

Sources

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