Spaced Repetition Study Scheduler
Enter a topic and a start date, pick a review pattern, and this tool lays out the exact calendar dates you should come back and review that material — spacing each review a little further apart than the last so the information moves into long-term memory instead of fading a few days after you first learned it. Pair this schedule with the Flashcard Study Tool — build a deck for the topic once, then come back on each review date listed here and run through the same deck again. If you need to plan a full week across several different subjects rather than spacing out review of just one topic, the study schedule generator is the better fit; this tool is focused specifically on when to revisit one topic over time.
Each option lists how many days after your start date you'll come back and review — see the "Choosing the Right Pattern" section below for guidance on which one fits your situation.
Comma-separated numbers, each meaning "days after the start date." They don't need to already be in order — they'll be sorted automatically.
Review Schedule
Note: if your start date is in the past, some review dates below may already have passed. They're still listed rather than hidden, so you can see the full plan and catch up on anything you missed instead of losing track of it.
| Review | Date | Day of Week | Done |
|---|
What Is Spaced Repetition?
In the 1880s, German psychologist Hermann Ebbinghaus ran a series of memory experiments on himself, testing how quickly he forgot lists of nonsense syllables he had just memorized. What he found became known as the forgetting curve: memory for newly learned information drops off sharply within the first day or two, then keeps fading, but at a slower and slower rate the longer it goes unreviewed. Left alone, most of what you "learned" yesterday is already substantially gone by tomorrow.
The forgetting curve isn't a reason to give up — it's a map. Ebbinghaus and the researchers who followed him also found that if you review the material again right around the point you'd otherwise start to forget it, you don't just re-learn it — you reset the curve to fade more slowly next time. Review too early, while it's still fresh, and you barely strengthen anything, because your brain never had to work to retrieve it. Review too late, after it's already gone, and you're basically re-learning from scratch. The sweet spot is reviewing just as the memory is getting shaky but before it's lost — which is exactly what a spaced repetition schedule is designed to line up for you.
Why the Intervals Get Wider Over Time
Notice that every pattern in this tool spaces reviews further and further apart — 1 day, then 3, then a week, then two weeks, then a month. That widening gap isn't arbitrary. Each time you successfully recall something, the memory gets a little more durable, and it takes longer for it to become shaky again. A fact you've now reviewed and recalled successfully four times doesn't need to be checked again in another day — it can comfortably wait weeks. Reviewing it too soon at that point would just be wasted effort spent on something you've already locked in.
This is the core mechanism behind spaced repetition: instead of reviewing everything on a fixed daily schedule forever, you gradually stretch out the gap between reviews as the memory proves it's sticking. That's also why a single missed or late review isn't a disaster — the interval was already built with some slack in mind, and getting back on track just means the next review does a little more work than usual.
Choosing the Right Pattern
- Standard (1, 3, 7, 14, 30 days) — a good general-purpose default for most material you're learning for the first time, with no unusual deadline pressure. It follows the classic spaced repetition curve almost exactly as originally studied.
- Intensive (1, 2, 4, 7, 12, 20 days) — front-loads more frequent reviews, packed into a shorter overall window. This is the better choice for harder material you're still shaky on, or when you have an exam coming up in the next couple of weeks and need to build recall quickly rather than gradually.
- Light (3, 7, 21, 45 days) — skips the very-short-term reviews and spaces things out much further, which suits material you already know reasonably well and mainly need to keep from fading — for example, something you'll be tested on again cumulatively months from now, like content for a final exam early in a semester.
- Custom — type your own comma-separated day offsets if none of the presets quite match how confident you already are with the material, or how much time you have before you need it.
None of these patterns are locked in forever for a topic — it's completely reasonable to generate a Standard schedule when you first start learning something, then generate a fresh Light schedule for the same topic later once it feels solid, so your remaining reviews stretch out further.
Frequently Asked Questions
What is the forgetting curve?
It's the pattern, first documented by Hermann Ebbinghaus, describing how quickly newly learned information fades from memory without review — fast at first, then more slowly. Spaced repetition schedules exist specifically to interrupt that curve with a review at roughly the point memory would otherwise start slipping, which is more effective than reviewing constantly or reviewing only once.
What if I miss a scheduled review date?
Reviewing late is still valuable — it's far better than skipping that review entirely. Memory that's a little further gone than ideal just takes slightly more effort to bring back, but the review still strengthens it. Try to get back on track with the remaining dates on your schedule rather than abandoning the whole plan because one date was missed.
Can I use this for more than one topic at a time?
Yes. Generate a schedule for one topic, then print or save it, then come back and generate a separate schedule for your next topic. Each schedule is independent, so you can build one per subject, chapter, or unit and keep them side by side.
Is this the same as apps like Anki?
Not exactly. Anki and similar flashcard apps use an adaptive algorithm — they track how well you know each individual card and adjust that specific card's next review date based on your performance, so easy cards drift further out and hard cards come back sooner. This tool is a simpler, fixed-interval version: you pick one pattern up front and every review in that schedule follows the same fixed set of day offsets, regardless of how any individual review actually goes. That makes it easier to plan around visually — good for a printed calendar of review dates — but less individually adaptive than a true spaced repetition app.
How many days should I review before a test?
It depends on how far away the test is and how well you already know the material. For an exam roughly two weeks out on material you're still shaky on, the Intensive pattern's tighter early reviews are usually a better fit than Standard. For a cumulative final months away on material you already feel solid on, Light's wider spacing avoids over-reviewing things you've already got down. As a rule of thumb, make sure your last scheduled review lands a day or two before the test itself — not the morning of — so you go in confident rather than cramming.
Does this tool save my schedule or track which reviews I've completed?
No. The checkboxes next to each review date are there so you can visually check things off while looking at the page or a printed copy, but nothing is saved — refreshing the page or closing the tab clears them. If you want a persistent copy, use the Print Schedule button and keep a physical or PDF copy, or re-generate the schedule whenever you need to see it again.
