Purpose
Reaction Time Test is a free, browser-based tool built around a single visual response task. It asks you to react after a green signal, then summarizes five valid rounds with best, median, and average scores. The site keeps the experience focused on a clear personal session rather than a social feed, account system, or public leaderboard.
Independent and transparent
This site is independent and is not affiliated with Human Benchmark, testreaction.com, or any device manufacturer. Those sites may be linked as public references where they explain browser-test context, but their branding, copy, data, and visual design are not reproduced here.
The written pages distinguish what the tool records from what it cannot prove. Browser reaction tests can be affected by setup and task design, so no page should be read as medical, occupational, driving, or competitive advice.