Key Repeat Detector
Inspect keydown repeats and approximate delay while holding a key.
Play Key Repeat Detector
Focus the test field, hold a printable key, and release it.
How to use Key Repeat Detector
Focus the test field, hold a printable key, and release it. All gameplay and calculations run in the browser; there is no mandatory account, game API or score upload.
What this challenge measures
Repeat events and first-repeat delay. 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
Hardware and OS keyboard repeat settings vary. 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 Key Repeat Detector free?
Yes. You can use it without signing in or paying.
How do I use Key Repeat Detector?
Focus the test field, hold a printable key, and release it.
What does Key Repeat Detector report?
Repeat events and first-repeat delay.
Are scores scientifically or medically certified?
No. Hardware and OS keyboard repeat settings vary.