LearnClash
Competitive learning app with ELO-ranked quiz duels
Posted Monday, April 20, 2026
Every quiz app lets you answer trivia questions. None of them care whether you remember the answers tomorrow. LearnClash is a competitive learning app that changes that. Pick any topic you can imagine. Quantum physics, 90s pop culture, ancient Rome, organic chemistry. Challenge a friend or get matched with an opponent at your skill level. Each duel has 18 questions across 6 topics, played turn-by-turn. The twist: every question you get wrong feeds into a spaced repetition system that resurfaces it at scientifically optimized intervals until you actually retain it. How LearnClash works: ELO Rating System: Every player starts at ELO 800 and climbs through 8 tiers, from Iron to Phoenix. The system uses chess-style matchmaking to pair you with opponents who genuinely challenge you. Beat someone rated higher and your rating jumps. Lose to someone lower and it drops. After 10 duels, the algorithm locks in your skill level. Any Topic, Any Difficulty: No fixed category lists. No recycled question banks. Questions are generated on any topic at three difficulty levels (easy, medium, hard), calibrated to your performance. Over 500 topics available at launch with more added constantly. Spaced Repetition Across All Modes: Most learning apps keep spaced repetition in a separate "study" mode. LearnClash builds it into every duel, every practice session, every game mode. Each question moves through three stages: Learning, Known, and Mastered. The system tracks your accuracy per question and adjusts review timing automatically. Zero Ads, Zero Pay-to-Win: Free players get unlimited duels, all topics, full ELO rankings, and complete spaced repetition. No ads in any tier. No unskippable video ads. Premium ($2.99/week, $7.99/month, or $39.99/year) adds unlimited practice sessions, detailed performance stats, and streak protection. Built by a lifelong learner who played QuizDuel every day for 12 years and got frustrated that thousands of trivia rounds never taught him anything lasting. LearnClash is the quiz app that actually makes you smarter. Available free on iOS and Android. No account required to start your first duel.