CheckReaction — Free Cognitive Tests

Measure your reaction, aim, typing, memory — no signup

Productivity Open Source Developer Tools GitHub發布於 2026年7月29日

什麼是 CheckReaction — Free Cognitive Tests？

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.

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