Put the phone down on time

Screen curfew timer: put the phone down on time

Most of us know we should stop looking at screens before bed, and most of us do not. A screen curfew turns a vague intention into a clear time. This screen curfew timer asks for your bedtime and how long before it you want to stop using devices, then counts down and, if you allow notifications, sends a gentle reminder when the curfew begins.

Searches such as "no screens before bed", "how long before bed should I stop using my phone" and "phone curfew for teens" show how common the problem is. The answer most sleep experts give is at least 30 to 60 minutes, and the right time is the one you will keep.

How the timer works

Enter your bedtime and choose a lead time: 30, 60 or 90 minutes before. The page shows the curfew time and a live countdown. With browser notifications turned on, it will remind you when the curfew starts, even when the tab is in the background. Everything runs in your browser and nothing is sent to a server.

Why screens affect sleep

Screens affect sleep in several ways. Bright, blue-rich light can suppress melatonin and delay the body clock, particularly at close range and high brightness. Content matters as much: social media, news, games and messages keep the mind alert and can create stress. Notifications can wake you. And the time spent on a screen replaces sleep, a pattern known as bedtime procrastination. Studies in teenagers consistently link late screen use with later and shorter sleep.

Night mode helps, but only a little

Night shift and dark mode reduce blue light, but evidence suggests that the effect on sleep is modest, and the stimulating content remains. They are better than nothing but not a replacement for stopping. Keep the phone out of arm's reach, charge it outside the bedroom if you can, and use an old-fashioned alarm clock or a bedside device without a screen.

What to do instead

Fill the curfew with something you enjoy: a book, a bath, stretching, a hobby or talking with someone. The wind-down routine timer offers a ready sequence. Add the breathing exercise, a body scan or quiet sounds from the sleep sound mixer. Plan the morning too, so you do not need the phone to check what is on tomorrow.

Screen curfews for teens and families

A curfew works best when it applies to everyone in the house and is agreed, not imposed. Teenagers are particularly vulnerable because their body clocks are already late. Pair the curfew with the school-night bedtime plan, so they can see what they gain: a better morning. Explain that this is about sleep, not punishment.

What your sleep tracker can tell you

If you wear a tracker, you can see whether a screen curfew changes how quickly you fall asleep or how many times you wake. Try one week with and one without. Many watches also offer sleep focus modes that silence notifications automatically; our Apple Watch sleep tracker guide explains how Sleep Focus works on iPhone and Watch.

Setting your curfew

If you go to bed at 10:30 PM, a 60-minute curfew means putting devices down at 9:30 PM. If that is too hard, start with 30 minutes and add 15 minutes each week. Charge the phone outside the bedroom and use a basic alarm clock. Put a book or magazine on the bedside table so the habit has something to replace it.

What about e-readers and TV?

A backlit tablet is like a phone. An e-ink reader without a backlight is gentler. A calm programme on TV is better than social media, though the light and the temptation to continue are issues. If you watch TV in bed, set a sleep timer and keep the volume low.

Curfews for children

For children, ban screens in the bedroom at night and have the family charge devices in a shared space. Replace screen time with the bedtime stories and the routine chart. Explain why it matters, and keep to the rule yourself.

What the research says about screens and sleep

A large body of research links evening screen use with later bedtimes, shorter sleep and poorer sleep quality, particularly in children and teenagers. Experimental studies show that reading on a light-emitting tablet before bed delays melatonin and makes people feel less sleepy, compared with reading a printed book. Some studies find the effect of the light itself is small and that the real harm is the time and stimulation. In practice the advice is the same: pick a time, stop and do something calm.

Bedtime procrastination

Many adults do not lack the time to sleep; they delay going to bed because the evening is the only time that feels like their own. This is known as revenge bedtime procrastination. A screen curfew works best when you replace the phone with something you actually want to do, so the evening still feels like yours. Plan a pleasant activity for the curfew hour and protect it from chores.

Useful phone settings

Set Do Not Disturb or a sleep focus to begin at the curfew time, switch on greyscale or night mode, and move addictive apps off your first screen. Consider an app timer that locks social media after a set hour. Put the charger across the room so you must get up to reach the phone. These steps support the timer but do not replace the decision to stop.

Frequently asked questions