WordieSpaced Repetition Scheduler
Pick a start date and an interval pattern, and get the exact days you should review. Copy it into your calendar or download it as a file.
What this scheduler does
Spaced repetition works by reviewing material at expanding intervals, each one timed for just before you would forget. This tool turns an interval pattern into concrete calendar dates, so you know exactly when each review is due. It also estimates your daily workload if you keep adding new words at a steady pace, which is the number most learners underestimate.
Choosing intervals
| Preset | Best for | Why |
|---|---|---|
| Classic (1, 3, 7, 14, 30, 90) | General vocabulary | Balanced; the most common schedule in study guides |
| Doubling (1, 2, 4 … 64) | Steady long-term learning | Simple rule, smooth workload |
| Exam in a month | IELTS, TOEFL, GRE crunch | Final review lands just before test day |
| SM-2 style | Anki-like long horizons | Mimics SM-2 intervals with the default ease of 2.5 |
Research on the spacing effect (Cepeda et al., 2008) suggests the best gap between reviews grows with how long you want to remember something. If your test is in 10 days, short gaps win. If you want the words for life, keep stretching the intervals.
Understanding your daily workload
Every word you add today creates future reviews. With 10 new words a day and six review steps, you will eventually see about 70 cards a day: 10 new ones plus 60 reviews from earlier days. At around eight seconds a card that is under ten minutes, which is very manageable. At 50 new words a day it becomes 350 cards and close to an hour. This is the most common reason people abandon flashcard apps.
How to use this tool
- Choose the date you first learn the material (defaults to today).
- Pick an interval preset, or type your own comma-separated intervals in days.
- Optionally enter how many new words you add per day to see your daily review load.
- Click Build schedule, then copy the dates or download them as an .ics calendar file.
Frequently asked questions
What intervals should I use for spaced repetition?
For vocabulary, 1, 3, 7, 14, 30 and 90 days is a reliable default. If you need words for an exam in a few weeks, compress the schedule; for long-term retention, keep expanding the gaps.
What happens if I miss a review?
Do it as soon as you can. If you could no longer recall the item, restart its schedule from the first interval. Missing one review rarely erases a memory completely.
How many reviews will I have per day?
With a fixed number of new words per day and six review steps, your daily load settles at roughly new-words-per-day × (number of steps + 1) after a few months. The calculator shows this steady-state number.
Does this tool save my data?
No. Everything runs in your browser. Nothing is uploaded or stored.
Turn these numbers into real words
Wordie quietly builds the habit for you: save words while you read, see them highlighted everywhere, review in seconds.
Add Wordie to Chrome — it's free
