Free cognitive tests to measure and improve your mental abilities
Free chess game review that tells you why
Stage
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Founded
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Based in
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Pricing model
Free
Freemium
Pricing
Not given
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
Reaction Time Test - measure response to visual stimuli
Visual processing tests including Visual Memory, Symbol Search, and Color Blindness
Score tracking and comparison to other users
Leaderboard functionality
Aim Trainer test
Color Hue Test for color distinction
FPS Reaction training including Gridshot, Flick, and Tracking
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
No signup required - tests available immediately without account creation
Tests based on established research protocols rather than casual games
Scores stored locally in browser with no personal data tracking or sale
Accessible cognitive testing without requiring lab or academic credentials
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
Human Benchmark
Explain My Chess