Test and improve your reaction speed with this simple and fun game. It offers precise, millisecond-level measurements and allows you to compete globally. Train your brain and reaction abilities anytime, anywhere.






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Whether you want more options like 发令助手pro or a completely different take on the same concept, our curated list of 10+ similar apps has you covered. Updated for 2026 with the latest ratings and comparisons.











Test and improve your reaction speed with this simple and fun game. It offers precise, millisecond-level measurements and allows you to compete globally. Train your brain and reaction abilities anytime, anywhere.





