Benchmark your reaction speed in milliseconds with percentile evaluation.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. Zero egress.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
Click anywhere on the screen when ready.
Wait for the screen to turn from RED to GREEN.
Click as fast as possible upon seeing the green flash.
Complete multiple trials to calculate your true average reaction time and global percentile ranking.
The average visual reaction time for humans is between 200ms and 250ms. Competitive esports athletes often reach 150ms to 190ms.
Yes. Monitor refresh rates (e.g. 144Hz vs 60Hz) and mouse input latency can add 5ms to 25ms of input lag to benchmark results.
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