How LearnClash's Spaced Repetition Works for Missed Questions

LearnClash brings a question back 7 days after you miss it, and once you answer that question correctly, it returns again 90 days later. This applies to questions across your duels and topics, so the review queue follows what you personally got wrong rather than a fixed study plan. It is the mechanism behind the site's claim that "the questions you miss come back later" — the point is to make a missed answer cost you something once, then pay you back in retention.

The two intervals

The 7-day step is the correction pass. The 90-day step is the retention check: it only triggers once you have already gotten the question right, which is why the site describes the sequence as "a missed question is due again after 7 days, and after 90 days once you answer it correctly."

Why the intervals are ordered this way

A wrong answer tells you the fact is not yet stored, so a short gap is enough to test whether the explanation stuck. A correct answer tells you it is stored but still fragile, so the next check is pushed far enough out to be meaningful. If you miss it again at either checkpoint, you re-enter the 7-day cycle — the schedule is driven by your last result, not by a calendar.

This is the standard spacing logic: short intervals for material you are still getting wrong, long intervals for material you have demonstrated you know.

What this looks like in practice

Say you miss a question about the Treaty of Westphalia in a history duel. You read the explanation after the answer, and the question is scheduled to reappear 7 days later. When it does and you answer correctly, it drops out of the short cycle and is scheduled for 90 days out. If you miss it that second time, you are back on the 7-day track.

The same loop runs regardless of how the duel itself ended — the review queue is tied to the question, not to the match result.

Where the review actually happens

The site does not describe a separate "review mode" screen. The mechanism is described as part of normal play: duels are turn-based with a 72-hour window per turn, and a duel is 18 questions across 6 rounds with 45 seconds per question. So the returning questions surface inside the quiz flow you are already using, which is consistent with the pitch that you "get smarter with every duel" rather than by switching to a separate study tool.

Limits worth knowing before you rely on it

• The intervals are fixed, not adaptive. LearnClash states 7 and 90 days. It does not describe a ladder of intervals that lengthens with each success, so do not expect a full Anki-style schedule.
• Only missed questions are guaranteed to return. The 90-day return is described as applying "once you get them right" — i.e., to questions you previously missed. The site does not claim that every question you answer correctly on the first try is scheduled for later review.
• Retention depends on you showing up. Because duels are asynchronous with a 72-hour turn window, the review only reaches you when you are playing. If you stop playing, the schedule has nothing to deliver into.
• No stated cap on queue size. The site does not say how many due questions can accumulate or how they are prioritized against new questions in a duel.

Quick way to test it yourself

1. Play a duel and deliberately note one question you got wrong.
2. Read the explanation shown after the answer.
3. Keep playing over the next week and watch for that question to reappear around day 7.
4. Answer it correctly and note that it should not resurface until roughly the 90-day mark.

If the question comes back sooner than 7 days or not at all, that is your signal that the schedule is behaving differently from the description — worth checking against the current app version rather than assuming the published intervals.