Free: $0. Pro: $9.99/month, $69/year, or $149 lifetime (early-bird for first 100 buyers, then $249). Pro covers up to 100 Coach-explained games and 50 scoresheet photos per month.
Key features
Random generators for questions, trivia and countries
Riddles and brain teasers for kids and adults with hidden answers
Over 170 free trivia and question pages
Accuracy scoring based on winning chances
Move labels: inaccuracy, mistake, blunder
No account required for free review
Import games from Lichess or Chess.com
Coach written explanations in plain language
Scoresheet photo to PGN conversion
Suspected mistakes checked twice at greater depth
What makes it different
Every quiz video is procedurally generated from code, ensuring consistent quality and enabling the same questions to power both videos and the website
Facts are checked against reliable references including national statistics offices and the United Nations before publication
Completely free to play with no account or sign-up required
Family-friendly content designed for classrooms, families and game nights
New quiz videos published daily on YouTube, TikTok and the website
Honest labeling: mistakes rechecked deeper before labeling
No uploads for free review: analysis runs locally in your browser
Free review never requires account or has daily limits
One-click review for returning users with remembered username
Quiz Zoomies
Explain My Chess