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Snore Timeline keeps the full night's audio and lays it on an interactive timeline you can scrub through and tap to hear. It records continuously instead of sampling, so a quiet hour shows up as a quiet hour. Coughs, gasps, sleep talking, and breathing pauses each get their own category, and sounds that happen close together are grouped into episodes you can play back.
Sleep stage data comes in from Apple Watch, Oura Ring, Whoop, Garmin, and Ultrahuman. Detection runs on your phone. No cloud, no account, no subscription.
No. Snore Timeline is free, with no subscription. Everything is included: breathing disruption detection, episode grouping, nightly summaries, and data export. There are no in-app purchases.
Yes. All audio processing happens on your iPhone. There are no cloud uploads, no external servers, and no account. Your recordings stay on your device and nobody else can get at them. If you want to share data with a doctor, you export it yourself.
For snoring alone, 3 to 4 feet away works fine. If you want breathing disruption detection, put the phone 1 to 2 feet away, since it has to be able to hear you breathe. A nightstand next to the bed, plugged in, is the usual spot.
The quality settings are there to save storage. If space isn't a problem, use High Fidelity. Only drop to Basic (~8 MB/hour) or Standard (~15 MB/hour) if you need the room, since both trim the higher frequencies to shrink the file. If you want to hear yourself breathing in recordings you need High Fidelity (~25 MB/hour). Basic and Standard cut out the subtle frequencies where breathing sits.
Yes. Snore Timeline works with Bluetooth audio devices including AirPods, so you can record through the night without running the phone's battery down.
You also pick which mic records. Choose iPhone Microphone in Settings and the phone records while your AirPods keep playing music at full quality, or Automatic to record through your headphones' mic whenever they're connected.
Recording uses roughly 3 to 5 percent of battery per hour, depending on your iPhone. Over a full 8-hour night that adds up, so keep the phone plugged in while it records.
Yes. Say “Hey Siri, start recording in Snore Timeline” or “Hey Siri, stop recording in Snore Timeline.” It's hands-free, which is handy at bedtime when the phone is already on the nightstand.
Snore Timeline uses Apple's sound classification to analyze your audio continuously through the night, in real time. There's no calibration or setup, and detection starts the moment you press record. The app identifies snoring, gasps, coughs, breathing, and sleep talking by looking at both the shape of each sound and its frequency makeup. All of the processing happens on your device.
Snore Timeline groups snores that happen close together. When it hears snoring, it opens an episode. If there's no snoring for 30 seconds, that episode ends, and the next snore starts a new one. Each episode shows its duration, snore count, and a plain-English summary, so you can see when in the night you snored most.
Yes. Snore Timeline listens for breathing pauses in your sleep audio. It looks for silent stretches of 10 seconds or more followed by a gasp or some other recovery sound, and marks those breathing disruptions on your timeline so you can see the pattern. This is audio analysis only. The app isn't a medical device, and if you're seeing pauses it's worth bringing them to a healthcare professional.
Snore Timeline classifies sounds by their acoustic profile. In a room where the baseline noise is above about 45 dB (a loud fan, a window AC, traffic), snores can get classified as Loud Sound events instead, because the raised noise floor changes how the sound comes through.
If you record in a noisy room, expect more events under Loud Sound. For the cleanest classification, keep the room quiet and put the phone close enough that your breathing stays audible.
Not unless you want to. Loud Sound Detection creates an episode whenever a sound rises above your room's background noise, and it's useful for catching sounds that are hard to classify, like whispers or mumbling that don't register as sleep talking. Snoring and sleep talking are detected on their own without it. By default the threshold is Automatic: the app measures your room's noise floor while you record, re-measures it every minute, and keeps the threshold just above what it hears, so a fan or an open window raises it and a quieter room lowers it. Settings shows the measured level and the dB it resolves to. If you'd rather choose a number, switch Threshold Mode to Fixed and set the dB level yourself.
The sound classifier focuses on snoring and sleep talking, so it does not label teeth grinding (bruxism) as its own category. Turn on Loud Sound Detection and the app flags any sound louder than your room's background noise, which captures the noise of grinding and drops it on your timeline to play back and review. It records the sound and nothing more. If you grind often, mention it to a dentist.
Snore Timeline listens to how regular your breathing is through the night, using the phone's microphone. About 15 minutes in, the algorithm has your personal breathing baseline. From there it sorts each period into Awake, Light Sleep, Deep Sleep, or REM using thresholds from published research. Steady, regular breathing suggests deep sleep, and irregular breathing points to REM. The algorithm also knows how a night is shaped, with deep sleep early and REM toward morning. Since the app only has audio to go on, stretches where your breathing is too soft to hear get labeled Silence and credited as restful sleep instead of guessed at. These are estimates from audio, and they aren't clinical measurements.
The estimates are based on published research into how breathing regularity relates to sleep stages. They give you a fair picture of your general sleep architecture and your trends over time. They haven't been validated against polysomnography (a clinical sleep study), so treat them as estimates. For a clinical sleep analysis, see a healthcare professional.
Research that stages sleep from a single physiological signal has reached roughly 70% agreement with polysomnography.
No. Stage estimation runs on its own from the same recording as snoring and breathing disruption detection. Put the phone 1 to 2 feet away on the nightstand and start recording. The algorithm needs about 15 minutes to work out your breathing baseline. For the most consistent results, put the phone in the same place each night.
Yes. Snore Timeline includes an Apple Watch companion app bundled with the iOS app. From your wrist you can stop an in-progress recording with a tap, see live heart rate and HRV while you record, and check a morning sleep dashboard with your hypnogram and snore activity.
A Sleep Score complication shows last night's score on your watch face, and a Smart Stack widget brings the current recording's Live Activity onto the Watch. The Watch app is iOS only.
Yes, on any iPhone. Turn on Snore Nudge in Settings under Detection and when the app hears you snoring, your iPhone plays a short tone, which is usually enough to get you to shift position without fully waking. The recording keeps running through it. With an Apple Watch paired you can have the nudge as a wrist tap instead, silent for a partner, or as both at once.
The app keeps nudging for as long as the snoring does, a step louder each time a nudge doesn't help, and stays quiet in the last 20 minutes before your alarm. The next morning, the snoring chart in your nightly summary pages through every nudge with its outcome, so you find out whether position nudging quiets your snoring.
Both. Smart Wake gives the alarm a window of 15, 30, or 45 minutes before your set time and rings when it finds you in light sleep, instead of pulling you out of deep sleep at the exact minute. If no good moment comes up, it rings at your set time as usual, and the alarm always fades in.
With an Apple Watch, Wrist nudge on Apple Watch delivers the alarm as gentle taps, alone for a fully silent wake or alongside the sound. Dismissing on the watch stops the alarm, the taps, and the recording together.
Yes. Snore Timeline reads from and writes to Apple Health.
Writes (all derived from your overnight audio, analyzed on-device):
Reads (measured by your wearable): sleep stages, heart rate, HRV, respiratory rate, blood oxygen (SpO2), and wrist temperature from any HealthKit-compatible device.
When you first turn the integration on, the app imports your full sleep history from Apple Health, up to 2 years of nights, so your history is filled in from the start. Apple Health is encrypted local storage on your device. Nothing gets uploaded to a cloud.
Yes. When you wear a HealthKit-compatible wearable overnight, Snore Timeline pulls those metrics into a nightly biometrics card showing your averages for breathing rate, heart rate, HRV, blood oxygen, and wrist temperature.
Each metric gets a rating such as Excellent, Good, Typical, Low, or Elevated, plus an inline sparkline so you can see how it changed across the night. Resting heart rate and HRV earn Excellent when they clearly beat your own baseline. Breathing rate tops out at Typical. The ratings are informational and aren't a medical diagnosis.
You can export the whole night's audio as one file, or download all of your snoring episodes at once. For a fuller export, tap the download icon to open the Export Report sheet, pick a date range, and include summaries, sleep phases, events, biometrics, and audio if you want it. The report comes out as CSV files plus whatever audio you chose to bundle.
Exported files are saved to your device, organized into two folders:
On iPhone: open the Files app, tap Browse, choose On My iPhone, then open the Snore Timeline folder.
On Android: open the Files app, go to Downloads, then open Exported Recordings or Snoring Episodes.
Yes. Recordings are saved to your device and can also be shared anywhere via the share sheet: AirDrop, Messages, email, and more.
To share the full night, navigate to the night, tap the download icon at the top of the Snoring Episodes list, and select Export Full Night Audio. To share an individual episode, tap the download icon on any episode card to save it, then tap it again to open the share sheet.
Open Export Report from the night you want to anchor on and choose a date range: Last 7 days, Last 30 days, or All time. Toggle which categories to include: Nightly Summary, Sleep Stages, Detected Events (snoring, sleep talking, coughs, gasps, breathing disruptions), and Watch Biometrics.
If you want audio, the app only pulls recordings for the night you're currently viewing, whatever date range you chose for the stats. It shows a size estimate before generating, then packages everything as one ZIP file you can share with a doctor, a sleep clinic, or anyone else.
This usually happens when iOS interrupts the app's audio session while it's running in the background. Anything that plays a sound (a phone call, an alarm from another app, some notifications) can cause an interruption. The app tries to resume on its own, but if the interruption went on too long, iOS won't let it restart until you reopen the app.
Fix: Turn on Do Not Disturb or a Focus mode before you start recording. That blocks the calls and notification sounds that would interrupt the session. You can also turn on the Bedtime Recording Reminder so a one-tap notification starts your recording at the right time each night.
Force-quit Snore Timeline, then reopen it. On iPhone, swipe up from the bottom of the screen and pause in the middle to open the App Switcher. On older iPhones with a Home button, double-tap Home instead. Swipe up on the Snore Timeline card to close it, then tap the icon on your Home Screen to relaunch and start a new recording.
Still stuck? Troubleshooting covers overnight recording issues, or get in touch.
