Release Reaction Test
Measure the delay between a green signal and releasing a held input.
Play Release Reaction Test
Hold the large button until it turns green, then release. Repeat five times.
How to use Release Reaction Test
Hold the large button until it turns green, then release. Repeat five times. All gameplay and calculations run in the browser; there is no mandatory account, game API or score upload.
What this challenge measures
Median release latency over five valid attempts. This result describes performance in this specific exercise; it should not be interpreted as a population ranking.
How to improve with practice
Repeat attempts under similar conditions, compare with your own recent sessions, and favor consistent accuracy over isolated personal records. For fair comparisons keep the same browser, input method and device when possible.
Accuracy and limitations
Mouse and touch release timing is influenced by browser scheduling. Paused tabs, varying display refresh rates and browser scheduling can also affect time-sensitive exercises. Browser-local history can be cleared by the visitor at any time.
Frequently asked questions
Is Release Reaction Test free?
Yes. You can use it without signing in or paying.
How do I use Release Reaction Test?
Hold the large button until it turns green, then release. Repeat five times.
What does Release Reaction Test report?
Median release latency over five valid attempts.
Are scores scientifically or medically certified?
No. Mouse and touch release timing is influenced by browser scheduling.
Related practice tools
Match a randomly presented arrow direction as quickly and accurately as possible.
Play free →False Start Reflex LadderPractice waiting through unpredictable signal delays without guessing early.
Play free →Rule Switch ChallengeSwitch between identifying an ink color and reading a color word.
Play free →