
Trivia Crack
Kahoot!
QuizDuel PREMIUM
Quizlet
QuizUp
Quiz Maker
Trivia Duel
Challenge friends to AI-powered quiz duels on any topic. Earn ELO ratings across 8 tiers (Iron to Phoenix), learn with spaced repetition, and track your progress. The best quiz app alternative to Trivia Crack and Kahoot. Free on iOS and Android.
Website, pricing, platforms and company facts side by side.
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| Website | codegres.org | learnclash.com |
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| Company | — | Startup from Switzerland · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Codegres.org yet.
LearnClash is a competitive quiz duel app where players challenge friends on any topic. Unlike fixed-category trivia apps, it generates questions on any subject at every difficulty level. How It Works Pick any topic: science, Harry Potter, history, or thousands more. Each duel has 18 questions...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
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Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Codegres.org and LearnClash.
LearnClash's answer:
LearnClash is the only quiz app that combines three things no competitor offers together: questions on any topic at every difficulty level, a chess-style ELO rating system with 8 competitive tiers, and spaced repetition built into every game mode. You don't just play trivia, you actually learn and retain knowledge.
LearnClash's answer:
Trivia Crack limits you to 6 fixed categories. Kahoot requires a host and is designed for classrooms. QuizUp shut down. LearnClash lets you pick any topic, matches you with opponents at your skill level through ELO, and uses spaced repetition so you remember what you learn. It's competitive trivia that makes you smarter.
LearnClash's answer:
Anyone who loves trivia and wants real competition. Students who want to learn while having fun, friend groups who want to challenge each other on specific topics, and trivia enthusiasts who've outgrown Trivia Crack's fixed categories. Ages 16-45, primarily in the US, with growing communities in Germany, France, and Spain.
LearnClash's answer:
LearnClash was built by David Moosmann to solve a personal frustration: existing quiz apps felt random and didn't help you actually learn. By combining AI-generated questions on any topic, ELO matchmaking from competitive gaming, and spaced repetition from learning science, LearnClash turns casual trivia into genuine knowledge building.
LearnClash's answer:
Flutter for cross-platform iOS and Android, Firebase for backend infrastructure (Firestore, Cloud Functions, Auth, FCM), Gemini AI for question generation and validation, and RevenueCat for subscription management. The ELO system and spaced repetition engine are custom-built.
LearnClash's answer:
Share your experience with using Codegres.org and LearnClash. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


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Thank you for considering LearnClash. I built this app to replace the ad heave quiz duel apps that I was playing with my mum. I wanted to build a way better version with proper ELO ranking and SRS system. Enjoy!