About
Stop the Timer
Stop the Timer is a free browser-based timing game where you test your ability to stop a hidden timer as close to a target time as possible.
infoWhat We Do
We provide a simple, accessible way to test and improve your time perception. The game starts instantly in your browser—no downloads, no sign-ups, no waiting.
extensionMultiple game modes for different challenges
groupsLocal multiplayer for group fun
sharePlayable challenge links to share with friends
trophyClear scoring and feedback
devicesWorks on mobile and desktop
warningWhat We Don't Claim
- removeStop the Timer is an entertainment game, not a medical or cognitive assessment
- removeResults may vary by browser, device, and input method
- removeShared leaderboards are casual and unverified
- removeWe don't promise identical timing accuracy across devices
- removeResults should not be used for health, employment, or important decisions
scoreboardHow Scores Work
Your score is based on the absolute difference between your actual stop time and the target time:
mailContact
Have questions, feedback, or want to report an issue? Visit our Contact page.