How often should the material be repeated? How does the algorithm plan repetitions?

Each language course we offer is based on the proprietary SuperMemo algorithm, which intelligently schedules your repetitions to optimize the learning and memorization process. The algorithm analyses your answers and adjusts your learning plan so that you review each item at the perfect moment—right before you are likely to forget it. This minimizes the time you need to spend studying while maximizing how long you retain the information.

What do the first repetitions look like?

If you’re just starting your learning or working with new material, the system sets the intervals between repetitions according to the forgetting curve:

• First repetition: usually after 2–3 days
  (this is the point at which memory starts to weaken slightly, but the information is still easy to recall)
• Second repetition: after about one week
• Subsequent repetitions: after several days, then after a month, a few months, and eventually even after a year or longer

If a given item feels easy for you (you select the “I know” rating), the interval grows faster. If it was difficult (“Almost” or “I don’t know”), the next repetition will appear sooner. This ensures you don’t repeat too early (when you remember everything perfectly) or too late (when the material has already faded from memory).

Many users assume that the first repetition should appear the next day. In reality, the algorithm works differently—it aims for the optimal, not the intuitive, moment. If you still remember the information very well, the system recognises that you don’t need to review it so soon. This can cut your study time by half compared to traditional methods.

And what if you take a long break?

If you return after weeks or months away, it may seem like the system “should” generate repetitions immediately. However, the algorithm continues to follow one key rule: it checks whether you remember the material.

• If your answer after the break is correct and easy, the system assumes the knowledge is well consolidated and will schedule… another long interval.
  (This often surprises users who expect a repetition the following day but instead see it scheduled for weeks or months later.)
• If recalling the answer is difficult or incorrect, the algorithm shortens the interval and brings repetitions closer together to help you rebuild the knowledge.

In short: a break does not reset your progress—the system simply re-checks what you know and adjusts your plan accordingly.

Tip: If you don’t want to focus on the number of days until the next repetition, or if you simply want to speed up your work with the app, you can turn off this display in the settings. Instruction: How to disable information about the number of days until the next repetition?

With just 15 minutes of learning a day, you can permanently remember thousands of words, sentences, and rules in far less time than with traditional methods. SuperMemo not only accelerates your learning but also helps you retain knowledge long-term without repeatedly going back over the same material.