Log in and get to level 3 to unlock flashcards.

What are flashcards?

Flashcards are a great way to quickly learn a lot of vocabulary. Each card has two sides: the front side prompts you to think about a word in Bulgarian. When you have the word in mind, you flip the card and check the back side: the answer. If the answer is correct, you evaluate how hard it was to come up with the word, and click on one of the following buttons: Hard, Good, or Easy. The card will then be scheduled for the next review, either earlier if you selected Hard or later if you selected Easy.

If you didn't find the correct answer, you click the Again button and this will schedule another review for this card in the same session.

Note that it's up to you to check your answer against the back of the card. You're in charge!

Spaced Repetition

The idea of spaced repetition is that the software will calculate the ideal time for your next card review, just before you would forget it. With this, you are able to learn as much vocabulary as possible in a given amount of time. As you successfully review a card multiple times in a row, the space interval between reviews for that card increases. If you get a card wrong, the interval resets.


  • You can only review cards that are due. There is nothing to do here when there are no due cards, you have to come back later.
  • On the computer, use the Space key to flip the card, and keys 1, 2, 3 and 4 for the Again, Hard, Good and Easy buttons, respectively.
  • Above each "correct" button is an indication of the next review interval for this card (5d = 5 days).