Track Snoring on iPhone Without an Apple Watch

At a glance

Scroll down to Apps that work without a watch for all eight apps, privacy labels and prices included.

What the iPhone does on its own

Apple's Health app handles sleep schedules, a Sleep Focus, and a history view. It doesn't listen to you. It doesn't measure your sleep either, and Apple's sleep tracking page says that to receive sleep data you have to turn on Track Sleep with Apple Watch and wear the watch for at least an hour each night. The iPhone User Guide gives the other route, a sleep tracker or monitor, or data you enter by hand.

That tracker can be a third-party app. Every iPhone already has a microphone. So most phone-only sleep apps begin there, and the few that lean on other sensors in the phone are noted in the table below.

What a phone alone can measure

Put a phone on the nightstand and it hears the room. All of what follows comes from that audio.

Snoring, and when it happens

An on-device sound classifier can label every snore and stamp the time. Snore Timeline groups them into episodes. A 30-second gap ends one. For each episode you get a duration, a snore count, and a peak and average level, and you can scroll through the whole night on a timeline and play back any moment you like.

Sleep talking, gasps and coughs

The same classifier sorts out speech, whispers and mumbling. Gasps and coughs have labels of their own. You hear what the app heard. If a label looks wrong, you can judge it yourself.

Breathing pause flags

Microphones can tell when breathing sounds stop. For Snore Timeline to flag a breathing disruption, it needs at least a minute of audible breathing, then 10 or more seconds of silence, then a recovery sound (a loud snore, gasp or breath, for example) breaking that silence. A flag marks a moment worth replaying and showing a doctor. It's an audio pattern. Oxygen and airflow aren't measured.

An estimate of sleep stages

Your breathing changes over the night. It's steady in deep sleep and irregular in REM. An app can pick up that pattern from sound and estimate a stage for each stretch of the night, and I explain how Snore Timeline does it in the next section.

Loudness in decibels

Snore Timeline reports loudness in dB SPL, on a scale from about 28 dB to 105 dB, where anything below about 40 dB counts as faint snoring and 56 dB and above counts as heavy. Your phone isn't a calibrated sound meter, though. Use the numbers as a personal reference. Compare your own nights.

What a phone cannot measure

Some signals only come from a sensor that touches your skin. No app can pull them from a phone on the nightstand.

• Heart rate and HRV. An Apple Watch takes these at the wrist. Snore Timeline shows average, minimum, maximum and resting heart rate, plus HRV as SDNN in milliseconds, but only if a watch provides them through Apple Health.
• Blood oxygen (SpO2). You need a wearable with an oxygen sensor for this. Audio can't tell how much oxygen reached your blood during a pause.
• Wrist temperature. Snore Timeline shows it when an Apple Watch Series 8 or newer records it on iOS 16 or later.

Watch stages and audio stages come from different methods. The watch reads sensors on your body. Audio apps work from breathing sounds. Some phone-only apps use other sensors again, and Sleep Cycle's listing names "patented sound technology or accelerometer-based sleep detection," while SleepScore's describes non-contact sonar from the nightstand. So two methods can disagree about the same night. Neither reads brain waves. A clinical sleep study does.

The reverse gap gets its own page. My guide to whether Apple Watch tracks snoring covers it. A watch reads your vitals but doesn't record snore audio.

Apps that work without a watch

I read each app's App Store listing, plus its site or help center where the listing left a gap, and noted what it says about using the phone alone. Privacy labels are the developers' own declarations, taken from the App Store on the same date.

What each one does well

SnoreLab has been a snoring app since 2012 and has 58K ratings. Its listing describes the Snore Score, remedy testing, lifestyle factor tracking and BreathFlow, which measures breathing stability, and its site says no wearable is needed for snoring. Sleep phases are another matter. Its FAQ shows them only from an Apple Watch through Apple Health, and it lists full-night recording and export as Premium features.

Sleep Cycle made its name with the smart alarm. Its listing says it tracks every night with sound or the accelerometer and needs no wearables, and it lists sleep stages along with snoring, coughing and sleep talking detection. Data export and Apple Health sync are Premium, per the listing.

SleepScore uses sonar from the nightstand. According to its listing, the technology is backed by 14 published papers that validate it against polysomnography. Snore recording isn't mentioned.

Pillow has an Editors' Choice badge and 96K ratings. It does the most when paired with an Apple Watch, which adds heart rate analysis on the wrist, and without one, the listing says it analyzes sleep cycles on iPhone or iPad and records snoring and sleep talking with on-device processing. Sound recordings, Smart Wake-up and CSV export sit under Premium in that listing.

ShutEye (350K ratings) and BetterSleep (391K ratings) lead with large sound libraries and each list a sleep tracker and snore detection, and BetterSleep's listing says you can listen to the recorded sounds in the morning.

Snollo analyzes sound on the device for snoring and sleep talking. Per its listing, the stage breakdown combines Apple Watch biometrics with sound. Without a watch, its site says, stages come from the iPhone's microphone and motion sensors, so the phone has to lie on the bed near you. If you plan to get a watch, it fits.

Snore Timeline is my app, so weigh this one accordingly. It estimates stages from audio with the phone on the nightstand and draws them in a band under the snoring chart, so you can see whether your snoring clusters in light, deep or REM sleep. It records the full night, lets you replay any moment, and exports CSV files, episode clips and the full-night audio. None of that costs anything, since there's no subscription and there are no in-app purchases. Every night gets a 0 to 100 sleep score, where snoring and breathing disruptions count against it. You can tag nights with sleep factors, 23 built in such as Nasal Strips plus any you create, and once you have 5 recorded nights the app compares them and ranks what helped. Each factor gets a result after 3 recorded nights with it and 3 without. Its Smart Wake Up Alarm reads the live stage estimate to wake you in light sleep within a 15, 30 or 45 minute window, and Snore Nudge reacts when you snore. It can play a tone, a step louder each time one doesn't help, or vibrate the iPhone with no sound, which works with the phone locked.

If you add a wearable later, the bundled Apple Watch app shows live heart rate and HRV while you record and taps your wrist for Snore Nudge and a silent alarm. It can stop a recording but can't start one. You don't need an Apple Watch for the wrist taps: Huawei, Garmin, Fitbit, Amazfit, Xiaomi, Withings, Polar, Suunto, COROS and any watch that shows iPhone notifications get them through notification mirroring, and Settings has setup steps and a Test Nudge. Apple Health data from Apple Watch, Oura, Whoop, Garmin and Ultrahuman feeds the sleep score, recovery score and hypnogram. The label reads Data Not Collected. Three other snoring apps in my 14-app survey declare the same label, and Snore Timeline is the only one of the four with no purchases; the privacy label comparison lists them. It has far fewer ratings than the apps above because it reached the App Store in September 2025, and I build it alone, with no outside funding and no marketing budget.

How Snore Timeline estimates stages from breathing

Stage estimates run on the same recording Snore Timeline uses for snore detection. There's nothing extra to set up. About 15 minutes in, the app works out your personal breathing baseline, your typical rate and regularity, and measures the rest of the night against that. No population average comes into it.

Most of the weight goes on breathing regularity. Steady, low-variance breathing points to Deep Sleep. Irregular, high-variance breathing points to REM. Light Sleep falls in between. The model also weighs breathing rate, snoring patterns, time of night and movement, the last of which it infers from big changes in sound.

Sometimes your breathing is too soft to classify and nothing suggests you're awake. The app doesn't guess then. It labels that stretch Silence. The result is a hypnogram in 5-minute bands. The sleep stages guide explains each color.

How accurate the estimate is

According to the support page, studies that stage sleep from a single physiological signal, such as breathing or heart-rate variability, reach about 70% agreement with polysomnography. I checked Snore Timeline against 57 overnight recordings from PSG-Audio, a public sleep-lab dataset, and its stages matched the lab scoring on about 70% of 30-second epochs. The app hasn't been clinically validated.

A 2022 study in Nature and Science of Sleep tested a deep-learning model that staged sleep from nocturnal sounds, and on hospital microphone audio it reached 70% epoch-by-epoch agreement for four classes (wake, light, deep, REM). Smartphone audio got 68%. The authors point out that their audio came from a hospital, and that home noise and different microphones may change how well it performs.

Audio stages give you a picture of your general sleep pattern. They also show trends across nights. Clinical staging uses brain waves, eye movement and muscle activity. The Sleep Foundation describes four stages, three non-REM and one REM, defined by those brain and body changes. From audio, they can only be inferred through breathing.

Placement for a phone-only setup

With no watch, the microphone is the only sensor you've got, so where you put the phone decides how good the night's data is.

• Distance. If all you want is snoring, 3 to 4 feet works. Breathing disruptions and sleep stages need the phone 1 to 2 feet from your head on the nightstand, because the faint hiss of each exhale is the first thing to fade with distance.
• Face-down and plugged in. On iPhones with an Always-On Display, face-down turns it off. Charging protects against iOS closing background apps on low battery.
• A quiet room. Fans, air purifiers and open windows all raise the noise floor. Once the room sits above about 45 dB at rest, the app logs more snores as Loud Sound instead.
• The same spot each night. If the phone stays put, your nights stay comparable.

Then start the recording, lock the phone, and sleep. Snore Timeline keeps recording in the background with the screen off. Turn on Sleep Focus or Do Not Disturb so a call can't interrupt the session. Getting Started walks you through night one, and how to record snoring on iPhone goes deeper on setup.

Adding a wearable later

Start with the phone and add a wearable later if you like. Your audio history stays put. Snore Timeline reads any device that writes sleep data to Apple Health, such as Apple Watch, the Oura Ring, Whoop, Garmin and Ultrahuman.

With an Apple Watch, heart rate, HRV, respiratory rate, blood oxygen and wrist temperature sit beside your snoring, and you also get a recovery score, a live view on the wrist during a recording, and Snore Nudge as a wrist tap. On nights when a wearable reports sleep stages, Snore Timeline uses its Deep and REM figures for your sleep score, since a wearable measures those stages better than audio can. Otherwise the app falls back to its breathing estimates.

When a night has data from more than one source, each source keeps its own stage timeline, so you can compare them. Setup is in the Apple Watch and wearables guide.

Frequently asked questions