Spaced repetition schedule: review intervals by day
In VocaDeck a new card rated Got it is reviewed again after 1 day, and each Got it after that multiplies the gap by the card's ease, 2.5 by default: 1, 2.5, 6.25, 15.63 and 39.08 days. Counted from the first review, the next reviews fall on days 1, 3.5, 9.75, 25.38, 64.46. Gaps are capped at 730 days, which the default path reaches on review 9. Not yet returns a card in 4 hours, Hard in 12 hours (new card) or 1.2 times the gap (graduated card), and Easy retires it.
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Adds a calendar date to each row. Without it the tables count days from the first review.
| Review number | Gap until next review | Next review on day |
|---|---|---|
| 1 | 1 day | Day 1 |
| 2 | 2.5 days | Day 3.5 |
| 3 | 6.25 days | Day 9.75 |
| 4 | 15.63 days | Day 25.38 |
| 5 | 39.08 days | Day 64.46 |
| 6 | 97.7 days | Day 162.16 |
| 7 | 244.25 days | Day 406.41 |
| 8 | 610.63 days | Day 1017.04 |
| 9 | 730 days | Day 1747.04 |
| Review number | Gap until next review | Next review on day |
|---|---|---|
| 1 | 1 day | Day 1 |
| 2 | 1.3 days | Day 2.3 |
| 3 | 1.69 days | Day 3.99 |
| 4 | 2.2 days | Day 6.19 |
| 5 | 2.86 days | Day 9.05 |
| 6 | 3.72 days | Day 12.77 |
| 7 | 4.84 days | Day 17.61 |
| 8 | 6.29 days | Day 23.9 |
| 9 | 8.18 days | Day 32.08 |
| 10 | 10.63 days | Day 42.71 |
| 11 | 13.82 days | Day 56.53 |
| 12 | 17.97 days | Day 74.5 |
| Rating | Next review in | Ease afterwards | Retired from review |
|---|---|---|---|
| Not yet | 4 hours | 2.5 | No |
| Hard | 12 hours | 2.5 | No |
| Got it | 1 day | 2.5 | No |
| Easy | 30 days | 2.5 | Yes |
| Rating | Next review in | Ease afterwards | Retired from review |
|---|---|---|---|
| Not yet | 4 hours | 2.3 | No |
| Hard | 12 days | 2.35 | No |
| Got it | 25 days | 2.5 | No |
| Easy | 32.5 days | 2.5 | Yes |
Want these reviews scheduled for you, with your own vocabulary?
Try VocaDeck freeAssumptions
- Every review happens on the day it is due; late reviews are not modelled.
- The tables are read from the app's scheduler, so they change if the scheduler changes.
- Day 0 is the first review. Calendar dates, if you pick a start, are UTC days.
- For a card in isolation. To see how many reviews a whole deck produces each day, use the reviews per day calculator.
Frequently asked questions
- What is the spaced repetition schedule in VocaDeck?
- A new card rated Got it returns after 1 day. Each further Got it multiplies the gap by the card's ease, which starts at 2.5, so the gaps run 1, 2.5, 6.25, 15.63, 39.08 days and on. The next review is scheduled from the day you review it.
- What does each rating do?
- On a new card: Not yet returns it in 4 hours, Hard in 12 hours, Got it in 1 day, and Easy in 30 days while retiring it from review. On a graduated card: Not yet returns it in 4 hours and lowers ease by 0.2; Hard multiplies the gap by 1.2 (at least 1 day) and lowers ease by 0.15; Got it multiplies the gap by ease; Easy multiplies it by ease and 1.3, raises ease by 0.15 and retires the card.
- What is the longest gap between reviews?
- 730 days, two years. Gaps are capped there.
- How low can a card's ease go?
- Ease stays between 1.3 and 2.5. A card at the 1.3 minimum grows its gaps by 30 percent per Got it, so it returns much more often than a card at 2.5. The second table shows that path.
- Is this FSRS or the Anki schedule?
- No. It is an SM-2-style scheduler with an ease factor per card. FSRS uses a different memory model and Anki has its own learning steps and modifiers, so these tables describe VocaDeck only.