# Spaced repetition for the notes you already have
Source: https://www.pupilbot.com/spaced-repetition-study-app
Full agent brief: https://www.pupilbot.com/llms.txt

PupilBot generates cards from your pages, then schedules every question with FSRS so it returns just before you would forget it.

## How it works

1. **Learn once.** Add your pages; PupilBot writes the questions and you answer each for the first time.
2. **Every question gets its own schedule.** FSRS-6 estimates memory stability. A correct answer extends the interval; a miss brings it back within minutes.
3. **Reviews find you.** Practise in the browser or connect Telegram so the bot asks due questions.

## A worked example

> Sleep is not just a period of rest. While you sleep, the brain continues to process information from the day. It strengthens useful connections, organizes new memories, and makes some information easier to recall later.

- **What are the two repeating stages of normal sleep?** Non-REM sleep and REM sleep.
- **How can sleeping after you learn something help your memory?** It helps stabilize and strengthen new memories so they are easier to recall later.

## What a schedule looks like

For a question answered correctly every time with FSRS-6 default parameters and 90% target retention:

| Review | When | Next review in |
| --- | --- | --- |
| 1 | Day 0 — first answer | 2 days |
| 2 | Day 2 | 11 days |
| 3 | Day 13 | 46 days |
| 4 | Day 59 | about 5 months |
| 5 | Day 222 | about 16 months |

A wrong answer starts a 10-minute relearning step and shrinks the long interval; correct answers rebuild it.

### Two signals, one schedule

FSRS decides when a question returns. Per-topic mastery rises with correct answers and decays slowly without practice; it decides what to ask next so weak topics receive more attention.

## Frequently asked questions

1. **What is spaced repetition?** A schedule that spaces successful reviews further apart, so each fact is studied just before it would be forgotten.
2. **What is FSRS?** The Free Spaced Repetition Scheduler, an open per-item memory model. PupilBot uses FSRS-6 published defaults at 90% target retention.
3. **How is this different from Anki?** PupilBot writes the cards, AI-grades typed answers and adds topic mastery to per-card scheduling.
4. **What happens when I get one wrong?** It returns in about ten minutes and its longer interval shrinks, then rebuilds after correct answers.
5. **Do I have to practise every day?** No. Due reviews wait; Telegram can nudge you when they accumulate.
6. **Is it free?** PupilBot is free to start. A paid subscription unlocks more usage; web, iPhone and Telegram use the same account.

## Related

- https://www.pupilbot.com/pdf-to-flashcards
- https://www.pupilbot.com/notes-to-quiz
- https://www.pupilbot.com/image-to-flashcards
- https://www.pupilbot.com/ai-quiz-generator
- https://www.pupilbot.com/
- https://www.pupilbot.com/mcp

Also in Spanish, French, German, Italian and Romanian at /es/spaced-repetition-study-app, /fr/spaced-repetition-study-app, /de/spaced-repetition-study-app, /it/spaced-repetition-study-app and /ro/spaced-repetition-study-app.