All tools
Retention Forecaster
Chart what you’ll remember on exam day.
Enter deck size, target retention, and days-to-exam. Get a forecast of recall probability and daily review load between now and the test.
cards
Total flashcards you’re actively reviewing.
14 days
1 d180 d
Mean days before recall drops to 90%. New learners ~3-7 days, mid-term ~14-30.
90%
70%95%
Higher retention = more reviews per day. 85-92% is the sweet spot.
60 days
1 d180 d
Distance to your next major test.
Forecast
Day 0Day 30Day 60
target 90%
With no review, recall drops to 90% after about 14.0 days — that’s when FSRS schedules the next review.
Reviews / day
21
Total reviews
1260
Strong on exam
64%
Per-day load
Rough estimate: deck size ÷ average stability. Revu schedules each card individually, so your real load is smoother.Decay curve
Without review, recall drops exponentially. FSRS re-schedules each card right before the curve crosses your target.Why this matters
Picking the wrong retention target can double your daily work. Tune this to fit your actual available study time.Revu tracks live stability per card