How many cards per session?

You choose before starting. Short and frequent beats long and occasional.

Can I review only the words that are due?

Yes. There is an option to prioritise the ones spaced repetition marks as due, which is the most efficient use of the time.

Flashcards built from your own words

Cards that flip, with spaced repetition behind them: every answer decides when the word comes back.

The flashcard is the oldest format there is for memorising vocabulary and still the best, for one concrete reason: it makes you retrieve the word before you see the answer. That effort is what builds memory. Recognising it in a list does not.

How to play

You see the word on one side and try to recall what it means.
You flip the card and check.
You answer honestly: "did not know it", "sort of" or "knew it".

That last answer is the one that matters. It is not a score: it is what decides when the card returns.

What it trains and why it works

Every answer feeds spaced repetition. Get it right and the word takes longer to come back; get it wrong and it returns the next day. Over time your deck reorganises itself around what you find hard.

Which is why answering honestly pays: marking "knew it" when you hesitated only makes the word vanish for weeks and reappear once you have forgotten it.

It plays with your saved words, so the deck is yours: it comes from what you looked up, not from a generic list. See all the games

FAQ

How many cards per session?: You choose before starting. Short and frequent beats long and occasional.
Can I review only the words that are due?: Yes. There is an option to prioritise the ones spaced repetition marks as due, which is the most efficient use of the time.