Study flashcards online
Only the cards that are due today, in a smart order. Answer in your head first, flip, then rate how it went.
How this study session works
Each card carries its own ease factor and interval from the SM-2 algorithm. Reviews you already know come first, oldest-due first; new cards follow in random order so you don’t memorise the sequence.
When you miss a card it re-enters this session and returns in about ten minutes; its long-term interval restarts at one day. When you get it right, the next gap grows: 1 day, then 6, then roughly the previous gap times the ease factor (2.5 to start). That growth is why a few minutes a day can hold thousands of cards; see the forgetting curve for the reason.
Rate honestly. Marking a shaky answer “Good” pushes the card too far out, and you’ll meet it again only after it has already faded.
Questions people ask
What do Again, Hard, Good and Easy mean?
Again: you could not recall it (the card returns in about 10 minutes and its interval restarts). Hard: you got it, with real effort. Good: you recalled it after a moment. Easy: instant and certain. Under each button you can see exactly when the card will come back.
How many cards should I study a day?
Whatever you can keep up daily. New decks feel heavy for the first week because every card is new; after that most of your time goes to short reviews. Twenty new cards a day is a common sustainable pace for exam prep.
What if no cards are due?
That means your schedule is on track. You can still run a practice round, which shows every card without changing its schedule.
Can I use the keyboard?
Yes: Space or Enter flips the card, and 1–4 choose Again, Hard, Good or Easy.