How to use and verify
Press I am ready to start your turn, then stop when you think ten seconds have passed. Reveal the ranking after everyone finishes. For example, 9.8 and 10.2 seconds both have a 0.2-second error and share a rank. Display precision is 0.001 seconds, but input latency makes this unsuitable for professional timing.
Guess 10 seconds without a clock. Leaving the page cancels this attempt. Equal differences share a rank.
This tool is designed for friends sharing one device. Agree on the rules and what will be shown before starting. Nicknames are enough; do not enter personal details you would not want others to see. Keep questions comfortable for everyone and let anyone skip a game. Prepare the inputs, then press Start when the group is ready. Follow the current player and progress shown on the screen. When a result appears, check it together before starting another round. This is a casual activity, not a measurement or voting system for important decisions.
Inputs and results live only in the current tab memory. There is no account, server storage or connection between players’ devices. Refreshing or closing the tab loses the session permanently. Check any result you need before leaving. Start over asks before clearing the current session; keep playing returns without discarding it. Close the tab after using a shared device. Browsers may slow timers or stop camera access when the page is hidden, so keep the screen visible during play. Sound and file saving depend on your browser and device permissions. Watch the visible status even when audio is enabled. If a feature is unavailable, use the alternative input or try a supported browser. Use Tab to move between controls and Enter or Space to activate buttons. Ask friends whether the instructions are easy to understand and the game is fun in a real gathering.
FAQ
Are files or names uploaded?
No. Processing happens in browser memory without sending inputs to a server or external API. Close the tab after using a shared device.
What should I check at the end?
Guess 10 seconds without a clock. Leaving the page cancels this attempt. Equal differences share a rank.
Start over?
For reference and may not be exact. Check the original and result before saving or sharing. Inputs stay on this device and are lost on refresh.