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New subscribers on iOS and Android get a 7 day free trial on the annual Premium plan.
Learn moreHead to head trivia duels with an explanation after every answer

LearnClash is a 20 questions game tool. A turn based 1v1 trivia game for iOS, Android and the browser, where every answer is explained and missed questions return after 7 days through built in spaced repetition. Free to play with no ads; Premium adds unlimited solo sessions and private topics.
LearnClash pairs a straightforward trivia contest with a study mechanism borrowed from memory research. Two players face off on a shared deck of questions, taking turns asynchronously, and every answer arrives with a short explanation of why it is correct. The premise is that competition supplies the motivation to engage, while the explanations and scheduled reviews supply the retention. A full duel runs 18 questions across six rounds. Each turn gives a player six questions, three drawn from their chosen topic and three from the opponent's, with 45 seconds allowed per question. Duels are turn based rather than real time: each player has 72 hours to take their turn, so matches can stretch across days without either side needing to sit down at a scheduled time. Opponents can be a friend reached by challenge link (the first three questions are playable in a browser before installation), a matched player picked by rating and topics played, or one of six clearly labeled AI rivals that do not affect rating. Clash, an in app AI tutor, accepts follow up questions after an explanation. The repetition layer is where LearnClash separates itself from plain quiz apps. A missed question returns after 7 days, and once answered correctly it is scheduled again after 90 days before being counted as mastered. Against that, the catalog is broad rather than deep per topic: a census from August 21, 2026 recorded 49,194 live questions across 848 topics, and players can create missing topics with questions generated and checked on demand. The audience is teens and adults aged 13 and up who want a competitive format to keep general knowledge practice going, plus families or friend groups who already trade quiz links. It plays on iOS and Android, with daily quizzes and friend challenges also open in the browser. Compared with self paced flashcard tools, LearnClash trades customization of your own study material (which is a Premium feature) for structured, social pressure. It is made by Pluxia GmbH in Baar, Switzerland, and carries no advertising in any tier.


New subscribers on iOS and Android get a 7 day free trial on the annual Premium plan.
Learn moreFree to play with no ads in any tier, covering duels, answer explanations, reviews of missed questions and all public topics. Premium costs $7.99 per month or $59.99 per year and adds unlimited solo sessions (fair use limit of 20 per hour), up to 200 Clash follow ups per 24 hours, private topics built from your own notes and up to 10 active duels instead of 3.
Learn more1v1 turn based duels of 18 questions across 6 rounds, with 45 seconds per question and a 72 hour window per turn. Every answer is explained, Clash answers follow ups as an AI tutor, and a 3 stage spaced repetition schedule brings missed questions back at 7 and 90 days. Opponents include friends by link, matched players and six unrated AI rivals; solo sessions, topic creation and a large public topic catalog round it out.
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