Frequently asked questions

A flashcard study tool. It schedules each card with spaced repetition, reminds you when cards are due, and lets you review them in your chat app or on the web.

Discord today. Everything also works on the website, in any browser.

You review each card again after a gap, and the gap grows each time you remember it. Reviews spread out like this stick far better than cramming. How spaced repetition works.

Yes. A free account lets you study any deck in the library, on the web and in Discord, with reminders. Create an account.

Premium adds personal decks (write your own, import and export CSV) and lets you ask about the card you are studying. See Features for the full list and Premium for prices.

Find one in the deck library, open it and choose Enroll. It then shows up in My decks, ready to study.

Yes. The website works in any mobile browser, and you can study in the Discord app.

Use the support page, or email support@hippocampus.gg.

The site only runs over HTTPS. The privacy policy says what we collect and how we use it.