Schlummer Free on the App Store

Sleep Tracker and Snore Recorder for iPhone

Schlummer listens through the night on your iPhone alone, records the loud moments so you can hear yourself snore, scores the night in the morning and wakes you inside a light sleep window.

Download Schlummer on the App Store

Free to download. iPhone, iOS 17 or later. No Apple Watch, no account, no cloud.

Schlummer sleep screen with the wake time set to 7:00 AM and a 30 minute gentle wake window
Set the time and the window.
Schlummer morning summary with a sleep score of 82, seven hours 48 minutes of sleep, a sleep stage chart and two recorded clips
The night in one screen.
Schlummer soundscape library with a sleep timer and twelve generated sounds including rain, ocean and wind
Twelve generated sounds.
Schlummer Pro screen showing the yearly, monthly and one time Lifetime options
Pro, including a one time price.

What Schlummer does

How a night actually works

Schlummer measures one thing: how loud your room is. The microphone level is averaged and written down every five seconds, and each reading is sorted into one of four bands. Quiet reads as deep, a little movement as light, more as REM, and a noisy stretch as awake. Stacked across seven or eight hours that produces the stepped curve you see in the morning.

A stepped sleep curve across four bands, from awake at the top to deep at the bottom, over one night Awake REM Light Deep 23:00 03:00 07:00
  • One reading every five seconds
  • Four bands, sorted by loudness
  • Drawn on the phone, stored on the phone
An illustration of the shape Schlummer draws. The curve is built from sound levels, so it is an estimate of your night, not a laboratory recording of your brain.

While the night runs, a second job watches the same signal for peaks. When the level crosses the threshold your sensitivity slider sets, Schlummer opens an audio file, writes about eight seconds and closes it again. That is why you wake up to a handful of short clips instead of an eight hour recording that fills your phone.

Try it tonight. Put the phone on the nightstand, plug it in and press start.

Download Schlummer on the App Store

Free, iPhone only, iOS 17 or later.

Who it is for

Someone told you that you snore

You do not need a diagnosis to want the evidence. Schlummer hands you the actual clips with a time stamp and a peak volume, so you can hear how loud it was at half past two. If a partner shares the bed, tag their clips as partner so your own numbers stay yours.

The 6:30 alarm always catches you in the wrong moment

The gentle window trades exactness for a softer landing. You give up as much as half an hour of certainty and get an alarm that tries to catch you already stirring.

You do not own a wearable and do not want one

No watch, no ring, no mat under the mattress. The iPhone you already charge at night is the whole setup. Read what a phone can and cannot see before you decide whether that is enough for you.

You travel, or your bedroom has no signal

Airplane mode changes nothing about the tracking, the alarm, the recordings or the sounds. Nothing is streamed and nothing is synced, so a hotel room without Wi-Fi behaves exactly like your own bedroom.

What it costs

Schlummer is free to download and a complete night costs nothing: the alarm, the curve, the score and the recordings are all in the free version. That version is paid for with advertising, a banner under the tab bar and occasionally a full screen ad between screens, and you are asked for consent before any ad is loaded.

Schlummer Pro removes the advertising and unlocks the eight soundscapes that are locked in the free version. It comes in three shapes, and the third one is not a subscription.

Prices are the figures from the App Store listing. Local prices vary by country, and the App Store is the source of truth. Subscriptions renew automatically unless you cancel at least 24 hours before the period ends, and you manage them in your Apple Account settings.

Read before you install

Frequently asked questions

Is there a free sleep tracker app for iPhone?

Yes. Schlummer is free to download and the whole night works without paying: the smart alarm, the sleep curve, the sleep score and the snore recordings. The free version is paid for with advertising, a banner under the tab bar and now and then a full screen ad between screens. Schlummer Pro removes the ads and unlocks all twelve soundscapes.

Do I need an Apple Watch to track my sleep with Schlummer?

No. Schlummer uses the iPhone microphone alone, so no watch, ring or mat is involved. Put the phone on the nightstand, keep it charging and start the night in the app. Because the signal is sound, the stages are an estimate and not a clinical measurement.

How does the smart alarm know when to wake me?

You set a wake time and a gentle window between 10 and 30 minutes. Inside that window Schlummer watches the sound level once a second, and the first time the night looks light or awake it plays a soft chime that swells in. If the window passes without such a moment, the alarm rings at the time you set. Snooze gives you five more minutes and starts listening again.

Does Schlummer record snoring and sleep talking?

Yes. Schlummer listens all night but only writes a clip when the room gets loud enough to cross your sensitivity threshold. Each clip is about eight seconds long. In the morning you get the list with the time offset, the length and the peak volume in decibels, you can play every clip back, tag it as snoring, no snoring or partner, and export one as a video with a waveform.

Does Schlummer work offline and in airplane mode?

Yes. Sleep tracking, the recordings, the sleep score, the twelve soundscapes and the alarm all run on the iPhone itself and need no connection. The app contains no server calls of its own. Only two things need the internet: loading an ad in the free version and buying or restoring Schlummer Pro.

Where does my sleep data go?

Nowhere. There is no account, no login and no Schlummer server. Nights, scores and audio clips are stored in the app on your iPhone and are deleted with it. If you allow it, Schlummer also writes the night to Apple Health on the same device. The one third party involved is Google AdMob, which delivers the ads in the free version and asks for your consent first. Schlummer Pro removes it.

Can Schlummer detect sleep apnea?

No. Schlummer is a wellness app, not a medical device. It records loud moments and estimates sleep stages from sound. It does not diagnose sleep apnea or any other condition, and nothing it shows you should be read as a medical result. If you snore heavily, wake up gasping or feel exhausted during the day, talk to a doctor.

What does Schlummer Pro cost and what does it unlock?

Schlummer Pro is optional and comes in three shapes: 4.99 EUR per month, 29.99 EUR per year with a three day free trial, or a one time Lifetime purchase at 69.99 EUR that is not a subscription. It removes the advertising and unlocks the eight soundscapes that are locked in the free version. Local prices vary by country.

Does Schlummer write to Apple Health?

Yes, if you grant permission during onboarding. After you end a night, Schlummer writes the sleep period as a sleep analysis sample to Apple Health on your iPhone. It does not read your Health data back and it never sends Health data anywhere.

Ready for tonight?

Download Schlummer on the App Store

Charge the phone overnight and keep the ringer on, so the alarm is dependable.