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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. Recording is continuous, not sampled, so a quiet hour reads as a quiet hour. The app tags coughs, gasps, sleep talking, and breathing pauses as their own categories, and groups consecutive sounds into episodes you can play back.
Sleep stage data merges in from Apple Watch, Oura Ring, Whoop, and Garmin. Detection runs on your phone. No cloud, no account, no subscription.
No. Snore Timeline is completely free with no subscription required. All features are included: breathing disruption detection, episode grouping, nightly summaries, and data export, with no hidden costs or in-app purchases.
Absolutely. All audio processing happens entirely on your iPhone, with no cloud uploads, no external servers, and no accounts required. Your recordings stay on your device and only you have access to them. You can export data to share with doctors while maintaining complete privacy.
For snoring detection, 3 to 4 feet away works well. To capture breathing signals for disruption detection, place your phone 1 to 2 feet away, since breathing must be clearly audible to be detected. Ideal placement is on a nightstand near your bed, plugged in for charging.
The audio quality settings exist to help you save storage space. Ideally, always use High Fidelity for the best recordings. Only choose Basic (~8 MB/hour) or Standard (~15 MB/hour) if you need to save space; these trim higher frequencies to reduce file size. To hear yourself breathing in recordings, you must use High Fidelity (~25 MB/hour), as Basic and Standard cut out the subtle frequencies where breathing sounds occur.
Yes. Snore Timeline supports Bluetooth audio devices including AirPods, making it easy to record throughout the night without draining your phone's battery.
Snore Timeline is optimized for overnight recording. Most users report 20 to 30 percent battery drain over 8 hours of recording. We recommend keeping your phone plugged in during recording for best results.
Yes. Say “Hey Siri, start recording in Snore Timeline” or “Hey Siri, stop recording in Snore Timeline.” Siri Shortcuts work hands-free, which is useful at bedtime when your phone is already on your nightstand.
Snore Timeline uses Apple's proven sound classification technology to continuously analyze your audio in real time throughout the night. Detection starts immediately with no calibration or setup needed. The app identifies snoring, gasps, coughs, breathing, and sleep talking by analyzing both the sound patterns and frequency characteristics of each audio segment. All processing happens entirely on your device for complete privacy.
Snore Timeline groups consecutive snore signals together. When snoring is detected, the app creates an episode. If no snoring occurs for 30 seconds, that episode ends and a new one begins when snoring resumes. Each episode displays duration, snore count, and a plain-English summary, so you can see exactly when you snored most during the night.
Yes, Snore Timeline detects breathing pauses by analyzing your sleep audio. It identifies extended silent periods (10+ seconds) followed by gasps or recovery sounds, and marks these breathing disruptions on your timeline so you can see patterns. This is audio analysis only, not a medical device. Breathing pauses may be worth discussing with a healthcare professional.
Snore Timeline classifies sounds based on their acoustic profile. In rooms where the baseline noise level is above approximately 45 dB (a noisy fan, a window AC, traffic), snores can be classified as Loud Sound events instead of snores, because the elevated noise floor changes how the sound is interpreted.
If you record in a noisy environment, expect more events in the Loud Sound category. For the cleanest classification, keep your room quiet and place your phone close enough that breathing sounds remain audible.
Loud Sound Detection creates episodes whenever sounds exceed your chosen dB threshold. This is 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 already detected automatically without this setting. To find the right threshold, start a recording and stay quiet while watching the live dB meter. Note your room's ambient noise level (typically 30 to 40 dB), then set your threshold 15 to 20 dB higher so only meaningful sounds trigger episodes.
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 above a threshold you set, which captures the noise of grinding and drops it on your timeline to play back and review. It records the sound, not a medical diagnosis; if you grind often, mention it to a dentist.
Snore Timeline analyzes the regularity of your breathing throughout the night using your phone's microphone. After approximately 15 minutes of recording, the algorithm establishes your personal breathing baseline. It then classifies periods into Awake, Light Sleep, Deep Sleep, and REM based on research-backed thresholds: steady, regular breathing suggests deep sleep, while irregular patterns indicate REM. The algorithm is also time-aware, accounting for the natural progression of sleep stages through the night. Because the app only collects audio, stretches where your breathing is too soft to hear are labeled Silence and credited as restful sleep rather than guessed at. These are estimates from audio analysis, not clinical measurements.
The sleep stage estimates are based on published research into the relationship between breathing regularity and sleep stages. They provide a useful picture of your general sleep architecture and trends over time. However, they have not been validated against polysomnography (clinical sleep studies) and should be treated as estimates, not diagnoses. For clinical sleep analysis, consult a healthcare professional.
Research that stages sleep from a single physiological signal has reached roughly 70% agreement with polysomnography.
No. Sleep stage estimation works automatically using the same audio recording as snoring and breathing disruption detection. Just place your phone 1 to 2 feet away on your nightstand and start recording. The algorithm needs approximately 15 minutes to establish your personal breathing baseline. For the most consistent results, use the same phone placement 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. 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 enable the integration, the app backfills 30 days of historical data so your sleep journey is complete from day one. Apple Health is encrypted local storage on your device. Nothing is 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 Good, Typical, Low, or Elevated rating and an inline sparkline so you can see how it changed across the night. These ratings are informational only and are not a medical diagnosis.
You can export the entire night's audio as a single file, or bulk download all your snoring episodes at once. For a richer export, tap the download icon to open the Export Report sheet: pick a date range and include summaries, sleep phases, events, biometrics, and (optionally) audio. The report exports as CSV plus any 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 pulls recordings for the currently viewed night only, regardless of the date range chosen for stats. The app shows a size estimate before generating, then packages everything as a single 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 runs in the background. Anything that plays a sound (a phone call, an alarm from another app, or certain notifications) can trigger an interruption. The app attempts to resume recording automatically, but if the interruption lasted too long, iOS will not allow it to restart without you reopening the app.
Fix: Enable Do Not Disturb or a Focus mode before you start recording. This blocks calls and notification sounds that would interrupt the session. You can also enable 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.
