ReflexX

What it does

ReflexX is a professional free online reaction time testing and cognitive training platform. We offer 8 scientifically designed test types, including Simple Reaction, Auditory Reaction, Number Memory, Sequence Memory, Chimp Test, Stroop Test, and more. Users can track personal progress, view global leaderboards, and use all features completely free. Based on cognitive science research, we provide accurate, reliable test results and professional data analysis.

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  Reflex Trainer2019 · ▲69

  Improve your reaction times

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  Reflex RoosterFeb 2026 · ▲100

  Can You React in Under 300ms!?

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  ReflexOct 2025 · ▲217

  Prompt to production app, in Pure Python

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  Reflexio:Reaction GameMar 2026 · ▲3

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  OneTapTool Reaction Time TestJul 2026 · onetaptool.com · ▲4

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  ReflexForgeJul 2026 · reflexforge.com · ▲3

  Free browser-based reflex training for gamers

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