Free reaction time test with multiple rounds and shareable results
About VoltReflex
VoltReflex is a free online visual reaction time test for gamers, athletes and anyone curious about their reflex speed. Click or tap when the screen turns green to measure your response in milliseconds. Choose 5, 10 or 20 rounds, see your best and average times, and share your results. Works on desktop and mobile with no download or sign-up.
✓ VerifiedOct 29, 2026
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