Analytics
How your memory is really doing
Forecasts, true retention, intervals, FSRS difficulty and recall, your best hours and your toughest cards, all in one place.
You’re looking at a sample learner’s last three months.
Jul 20 – Oct 17, 2026
Reviews
43,461
483 a day
71% vs previous 90 days
Study time
80 h
53 min a day
71% vs previous 90 days
Average answer
6.6 s
9.0 cards a minute
True retention
87.1%
Young 86.5% · mature 90.0%
0.4 pts vs previous 90 days
Cards learned
3,434
38 new a day
71% vs previous 90 days
Streak
67 days
Best 67 · studied 86 of 90 days
Future due
What’s coming up
275 due tomorrow · 60/day over the next 90 days
- Young
- Mature
405 due today. Review cards only; learning steps come back the same day.
Card counts
15,903 cards
- New8,42953.0%
- Learning00.0%
- Relearning00.0%
- Young1,66610.5%
- Mature5,68835.8%
- Suspended1200.8%
Reviews
Every answer, by card kind
43,461 reviews · 483/day · studied 86 of 90 days
- Learning
- Relearning
- Young
- Mature
Retention
True retention by week
87.1% true retention · young 86.5% · mature 90.0%
- Young
- Mature
Pass rate on review cards: anything but Again counts. Dashed line: the 90% target most decks aim for. Weeks with under 20 answers of a kind stay off the line.
Answer buttons
How you grade, by card kind
83.5% answered correctly · 43,461 answers
- Again
- Hard
- Good
- Easy
- Learning
- 77.3% correct · 16,044
- Young
- 86.5% correct · 22,532
- Mature
- 90.0% correct · 4,885
Review intervals
How far apart reviews are
3.2mo average · median 1.9mo · longest 3.3y
- Young
- Mature
Difficulty · FSRS
How hard your cards are
59% average difficulty · 7,354 cards
FSRS rates each card from 0% (easy) to 100% (hard) by how you answer it. The far right is worth rewriting or splitting.
Retrievability
Recall if asked right now
94.7% average · 7,354 review cards
FSRS’s estimate of the chance you’d remember each review card if it came up now. It dips as cards near their due date.
Hourly breakdown
When in the day you study
Busiest at 8 AM · 17% of reviews · sharpest at 9 AM (90.6%)
Success rate
Bars: reviews started in each hour. Line: pass rate on review cards; dashed at 90%.
Weekdays
Your week
Mondays are busiest · 511 reviews a day · sharpest on Tuesdays
Success rate
Bars: average reviews on that weekday across the range. Line: pass rate on review cards.
Added
Cards added
4,734 cards added · 53/day
Decks
Deck by deck
Totals include subdecks. Reviews, retention and time cover the last 90 days; the rest is now. Select a deck to filter the page.
| Japanese | 8,136 | 145 | 16,364 | 87.1% | 33% | 3.9mo | 3,951 | 30 h |
|---|---|---|---|---|---|---|---|---|
| Core Vocabulary | 6,000 | 96 | 10,519 | 88.1% | 32% | 4.1mo | 2,584 | 19 h |
| Kanji | 2,136 | 49 | 5,845 | 85.2% | 37% | 3.5mo | 1,367 | 11 h |
| Neuroscience | 900 | 40 | 3,683 | 88.2% | 76% | 4.2mo | 815 | 6 h 40 min |
| Rust & Systems | 700 | 34 | 3,280 | 87.8% | 72% | 3.5mo | 511 | 5 h 58 min |
| Spanish B2 | 3,000 | 45 | 6,095 | 88.6% | 27% | 2.7mo | 755 | 11 h |
| Organic Chemistry | 600 | 37 | 3,747 | 85.2% | 47% | 1.8mo | 356 | 7 h 3 min |
| World Capitals | 197 | 10 | 1,709 | 89.6% | 73% | 1.6mo | 99 | 3 h 8 min |
| JavaScript | 420 | 18 | 1,212 | 86.1% | 17% | 28d | 82 | 2 h 17 min |
| Statistics | 300 | 12 | 2,652 | 83.6% | 51% | 1.3mo | 239 | 5 h 5 min |
| German A1 | 800 | 28 | 1,631 | 82.3% | 10% | 25d | 132 | 3 h 9 min |
| Linux & Shell | 350 | 24 | 2,685 | 87.7% | 73% | 2mo | 282 | 4 h 58 min |
| World History | 500 | 12 | 403 | 90.2% | 5% | 17d | 16 | 47 min |
Toughest cards
The cards you forget most
Ranked by lapses (times forgotten after learning). 10 leeches at 8+ lapses. Rewording or splitting a card often fixes it.
What you’ll see
Stats that tell you what to do next
Every chart has a table view, follows your time zone and day rollover, and can be narrowed to one deck and its subdecks.
- Future dueTomorrow’s reviews and the weeks ahead, split into young and mature cards.
- True retentionYour real pass rate on review cards, week by week, against a 90% target.
- Reviews and timeEvery answer by card kind (learning, relearning, young, mature), as counts or minutes.
- Memory, FSRS-styleIntervals, difficulty and the chance you’d recall each card right now.
- Your best hoursWhen in the day and week you study, and when you remember best.
- Decks and problem cardsSortable numbers for every deck, plus the cards you forget most and your leeches.