What do the self-grade buttons ("Fail", "Hard", "Good", "Easy") mean?

What the buttons mean

After you flip a card, AlgoApp asks how well you knew the answer. Your choice helps AlgoApp decide when to show that card again.

• "Fail": You did not know the answer, or your answer was mostly wrong.
• "Hard": You got it, but only with effort or hesitation.
• "Good": You knew it correctly with normal confidence.
• "Easy": You knew it immediately and comfortably.

How to choose

Try to grade honestly rather than optimistically. The more accurate your response, the better AlgoApp can schedule future reviews.