Screen Soft Light / Timekeeping / NAP TIMER

Nap

20:00

Space starts or pauses, R resets, F goes fullscreen.

No. 001 · NAP TIMER

Nap timer — dark while you sleep, a slow sunrise to wake you

  • 01 10, 20, 30 and 90 minute presets
  • 02 Near-black screen while you sleep
  • 03 Two-minute sunrise and a rising chime

Choose 10, 20, 30 or 90 minutes and press Start nap. The screen drops to a near-black ember so it does not keep you awake, and for the last two minutes it brightens from deep red to warm daylight, ending with a rising chime.

Other routine timers —
Pomodoro timerMeditation timer
§ 01

Which length to choose

A nap of about 20 minutes or less usually ends before deep sleep begins, which is why people tend to wake from it feeling lighter. Thirty minutes is a common middle ground, with a small chance of waking groggy. Ninety minutes is roughly one full sleep cycle, enough to wake from a lighter stage. These are general patterns and individual sleep varies, so treat the presets as starting points.

§ 02

For the final two minutes, the screen color is moved along a sunrise ramp: deep red, orange, warm white and finally pale daylight.

How the sunrise works

For the final two minutes, the screen color is moved along a sunrise ramp: deep red, orange, warm white and finally pale daylight. It is the same ramp used by the sunrise alarm clock page. On very short naps the ramp is shortened to half the nap so it never starts before the nap does. The brightening is silent; the chime comes at the end.

§ 03

A dark screen for the sleep itself

While you sleep, the background is a near-black ember with the countdown in a faint dark orange, dim enough that the screen should not light the room. If you want the lowest possible light, also turn the device's own brightness down before you start.

§ 04

The chime

At zero the page plays a soft rising three-note chime, then repeats it up to three more times, 12 seconds apart and a little louder each time, until you press Stop. Untick Sound if you only want the sunrise. With Sound unticked, nothing is played at all, including any background noise.

Procedure

Three moves to peak output

  1. 01

    Pick a length

    Tap a preset or type your own from 2 to 240 minutes. Add a background sound if steady noise helps you drop off.

  2. 02

    Lie down and press Start nap

    Turn the device's volume up to a level you will hear, put it where you can see it from the pillow, and let it run.

  3. 03

    Wake gradually

    Two minutes before the end the screen starts to brighten. At zero a rising chime plays, then repeats a few times until you press Stop.

Inquiries

Questions worth asking

Q.01 How long should a power nap be?
About 10 to 20 minutes is the usual advice for a quick recharge, because it tends to stop before deep sleep. Longer naps can leave some people groggy for a while. Try the 20 minute preset first and adjust.
Q.02 Does the countdown include the time it takes to fall asleep?
Yes. The nap length is the time from pressing Start nap to the chime, falling asleep included. If you take a while to drop off, choose a few minutes more than you want to sleep.
Q.03 Will the chime wake me if my phone is on silent?
Not reliably. The chime plays through the device's media volume, and a silent switch or Do Not Disturb setting on some phones can mute web audio. Test it once before relying on it, and use your phone's own alarm as a backup for anything important.
Q.04 Can I add a sound to fall asleep to?
Yes. Choose brown noise, pink noise or ocean waves under Background sound. It fades in when the nap starts and fades out as the sunrise begins, so the wake-up is quiet until the chime.
Q.05 Will the screen stay on while the timer runs?
Browsers that support the Screen Wake Lock API (Chrome, Edge and recent Safari) keep the screen awake while the timer is running. On other devices, turn off auto-lock or the screen saver first. Timing comes from the device clock, so a throttled background tab still finishes on time.
Cross-reference

Try adjacent plates