Best Reaction Test is a free, browser-based reaction time test. Measure your visual response in 5 rounds — get your median, best time, consistency score, percentile rank, and "reaction age" instantly. No signup, no download.
4 modes: classic test, survival game, 10-round challenge, and F1 race-start lights. Opt-in anonymous community stats, local progress tracking, 14 languages. Honest measurement from cited research — no made-up benchmarks.
