How we check cards

A person on our team checks every card against the sources named on the chapter's page before it ships.

Cards may be drafted with AI tools, but none ships unchecked.

The review date on a chapter is the last day a person re-read every card in it. Any change to a chapter comes with a full re-read.

The number of reports fixed on a chapter counts the reports that led us to change a card.

Our checks refuse a chapter without a review date, a card that's too long, or a hint that gives the answer away.

Anyone can report a card in one tap. If you report from this browser, we tell you in your library when we've fixed or checked the card.