The learning method behind Buffl is based on the Leitner system. The goal is to memorize information through targeted repetition of flashcards. The flashcards are organized into five boxes.

At the beginning of the learning process, all cards are in the first box. The learning progress is determined by the distribution of cards across the different boxes. If all cards are in Box 1, the learning progress is 0%. The goal is to move all cards to the fifth box. Once a card is answered correctly, it is moved to the next box. If a card is answered incorrectly, it is moved back to the first box.

When all flashcards are in Box 5, you have achieved a learning progress of 100%.

With the learning speed, you can determine the number of cards that are tested per round. The default setting of 10 cards can be set for each card stack.

If you need to speed things up, you can enable the "Fast Learning" feature. This will prevent cards that you answered incorrectly from being moved back to the previous box. Instead, they will remain in their current box until they are answered correctly.

If you mark a card as a favorite while studying, it will be additionally saved in the Favorites box. This allows you to review the marked cards at any time.