CheckReaction — Free Cognitive Tests
Measure your reaction, aim, typing, memory — no signup
CheckReaction — Free Cognitive Tests launched on July 29, 2026 with 1 votes.
What it does
Most reaction time tests are bloated with ads or require signup. CheckReaction gives you instant access to 5 cognitive tests — reaction time, aim trainer, typing speed, sequence memory, and number memory — plus 17 free arcade games.
Test your reaction time with Simple, Choice, and Sound modes. Measure reflex speed in milliseconds, track improvement over time. No download, no signup.
Measure your reflex speed in milliseconds — Simple, Choice, and Sound modes. Free, no signup. Click anywhere in the box to begin. 5 trials — early clicks are excluded. Reaction time is the interval between a stimulus and your response — the raw speed of your brain's processing pipeline. The average human simple visual reaction time is 200–250 milliseconds . Professional esports players average 150–180 ms. F1 drivers react to lights-out in roughly 200 ms. This test measures exactly that: how fast your brain can detect a change and tell your finger to click. One stimulus, one response. The screen turns green — you click. This is the purest measure of raw processing speed, and the most common…from checkreaction.com
Does a similar job
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OneTapTool Reaction Time TestJul 2026 · onetaptool.com · ▲4Test your reflexes free — 5 rounds, instant score
Reaction Time TestDec 2025 · reaction-time-test.org · ▲3Benchmark your reflexes, clicking speed, and aim accuracy
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