
Builder profile
David
@david_moosmann
Founder of LearnClash, a competitive learning app where players master any subject through 1v1 quiz duels with ELO rankings and built-in spaced repetition. I built it after 12 years of daily QuizDuel with my mum, when I realized quiz games should actually teach, not just test. Writing about learning science, quiz game design, and applied ELO at https://learnclash.com/blog .
Joined April 2026
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