Pulse

How good is your internal clock?

We light up 5 pulses. After each one, press and hold for exactly as long.

Hard practice. Share your result and friends get the same pulses.

How to play

  1. After ready, set, go, a pulse of light glows for a moment. Feel how long it lasts.
  2. When it says your turn, press and hold anywhere, or hold Space, for the same length of time. Let go when it feels right.
  3. Each round scores up to 10. Twice as long costs the same as half as long. Five rounds make up to 50.

Daily: the same five pulses for everyone, from half a second to six, with no clock. One attempt, new pulses at 00:00 UTC. Easy practice pulses last 1–3.5 s and show a clock while you hold. Hard practice uses the daily rules.

A soft tone plays with each pulse; turn sound off with the speaker button. If the tab is hidden mid-round, that round starts again. Taps shorter than 60 ms don’t count.

Statistics

Daily

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Played
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Average
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Best
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Streak

Practice

PlayedBestAverage
Easy0——
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