Feynman flashcards: prove you get it.
Anyone can flip a card. Feynman mode makes you explain the concept back in your own words, grades the explanation, and turns the gaps into cards.
Start free →
30 days of Plus or Max free, no credit card — keeps working as Free afterwards.
What it is.
- Free-recall explanation prompts, graded like an examiner would.
- Gaps extracted automatically into a spaced-repetition queue.
- A consistency row without guilt: missed days are scheduling events, not failures.
How it works.
- 1Pick a topic, or let a textbook chapter generate the prompts.
- 2Explain it back in your own words.
- 3The explanation gets graded; what you missed becomes cards.
- 4Reviews land on Today, spaced so they stick.
What each plan gets.
| Plan | Feynman Flashcards |
|---|---|
| Victor Free | — |
| Victor Lite | Unlimited |
| Victor Plus | Unlimited |
| Victor Max | Unlimited |
Questions.
- Why explanation instead of flipping cards?
- Recognition feels like knowledge; explanation exposes what you actually hold. Grading the explanation finds the exact sentence where understanding stops.
- Is there a streak?
- There is a quiet consistency row — "studied 4 of last 7 days". No fire, no guilt copy, no lost-streak theatre.