About SleepTrace
The sleep tracker that listens instead of being worn, and is straight with you about what that can and cannot show.
SleepTrace is a free app for iPhone and Android that records your snoring and estimates your sleep stages from the sound of your night. Placed on the nightstand, it captures the audio, labels every snoring episode with a decibel reading, and estimates awake, light, deep and REM sleep every 30 seconds, with the audio analysed on the device, with no wearable required; a watch adds heart data on top. Free to start, with an optional €6.99/month Premium tier. It is a wellness app rather than a medical device.
Key facts
SleepTrace at a glance
- Category
- Sleep-tracking app for iPhone and Android
- Method
- Acoustic analysis of the night, processed on device
- Hardware needed
- Your phone (iPhone or Android), no watch, ring or band
- Sleep stages
- Awake, light, deep, REM, estimated every 30 seconds
- Sound detection
- Clips of snoring, coughing and sleep talking, each with decibel peak and time; possible breathing pauses are marked with a time, without a clip
- Sleep Shield
- Optional, free app break: closes the apps you choose around bedtime and for a set time after waking, set up with Apple Screen Time (iPhone, iOS 26.5 or later)
- Morning Routine
- Optional, free: tasks, affirmations, a reading, guided breathing and an evening intention, one step per screen after the morning mood check
- Price
- Free to start; Premium €6.99/month (yearly plan available)
- Platform
- iPhone and Android · localised in 14 languages
- Made by
- Sleep Trace Ltd, Larnaca, Cyprus (founder: Jan Kohlhaas)
- Status
- Wellness app, not a medical device, does not diagnose
The method
Why sound, and not a wrist sensor
Most sleep trackers infer sleep from movement and heart rate at the wrist. That works, but it is blind to an entire dimension of the night: what it sounds like. Breathing, snoring, pauses, coughing, talking and the noise of the room around you are all signals a wrist sensor physically cannot pick up.
SleepTrace reads that dimension instead. The night’s audio is converted into a visual representation of the sound, and a model built for this purpose estimates each 30-second window as awake, light, deep or REM. The same audio is scanned for snoring, sleep talking and coughing, saved as clips you can play back with their decibel peak and time. A possible breathing pause is marked with its time, such as 03:40, but there is no audio to play for it.
The sound analysis happens on the device. It reads and writes Apple Health, and an Apple Watch is optional: pairing one adds heart rate, HRV and blood oxygen, but no wearable is required.
Being straight
What SleepTrace does not do
Sleep is a health topic, so the limits matter as much as the features:
- It does not diagnose anything. SleepTrace is a wellness app, not a medical device. It can show you that you snore heavily or that your breathing appeared to pause, it cannot tell you whether you have sleep apnea. Only a qualified professional can.
- It is not a sleep lab. Polysomnography remains the clinical reference standard. Every consumer tracker, wrist-worn or acoustic, produces an estimate.
- It does not replace a wearable for cardiovascular data. If you want continuous heart-rate and blood-oxygen tracking, that needs a watch. SleepTrace adds the acoustic layer a watch is missing; it is not a substitute for one.
- It does not sell your data. Audio is analysed on the device, your data is not sold and not used for advertising, and you can delete it in the app. Optional account sync and an analytics consent exist; details are in the privacy policy.
Who builds it
An independent project
SleepTrace is developed and operated by Sleep Trace Ltd, a company based in Larnaca, Cyprus, founded by Jan Kohlhaas, an independent developer. It is not backed by a hardware company, which is the reason it is built the way it is: there is no device to sell you, so the app has to be worth using on its own.
Full provider information is in the legal notice, and how data is handled is set out in the privacy policy. Questions and feedback go to support@sleeptrace.app.
Identity
Which SleepTrace is this?
There is more than one iOS app called SleepTrace, from unrelated developers. This site belongs to exactly one of them:
- App
- SleepTrace – Sleeptracker
- Developer
- Sleep Trace Ltd, Larnaca, Cyprus (founder: Jan Kohlhaas)
- App Store ID
- 6760831021
- Bundle identifier
- app.sleeptrace
- Website
- sleeptrace.app
- Support
- support@sleeptrace.app
If you are looking at a SleepTrace app with a different App Store ID, it is a different product and we cannot help with it.
Common questions
About SleepTrace, answered
SleepTrace is an app for iPhone and Android that tracks your sleep using the phone's microphone instead of a wearable. You put the phone on your nightstand and it records the night's audio, then an on-device model estimates your sleep stages every 30 seconds and saves clips of sounds such as snoring, coughing and sleep talking. It is a wellness app, not a medical device.
It analyses sound rather than movement or heart rate. The night's audio is turned into a visual representation of the sound, and a model trained for this task estimates awake, light, deep and REM sleep from it in 30-second epochs. The analysis runs on the device itself.
SleepTrace is developed and operated by Sleep Trace Ltd, a company based in Larnaca, Cyprus, founded by Jan Kohlhaas, an independent developer. The app is SleepTrace - Sleeptracker, App Store ID 6760831021, bundle identifier app.sleeptrace. Several unrelated iOS apps share the name SleepTrace; if the App Store ID differs, it is a different product. Full provider details are in the legal notice.
SleepTrace is free to start, with nightly tracking, sleep stages and 3 playable clips a month included at no cost. Premium costs €6.99 per month, with a cheaper yearly plan, and unlocks unlimited sound clips, all insights, long-term trends, Apple Watch metrics and encrypted backup.
No consumer sleep tracker matches polysomnography, the clinical reference standard. SleepTrace reads a different signal than wrist wearables do, sound rather than motion, which lets it surface snoring and breathing events a wrist sensor cannot hear, but it is an estimate, not a clinical measurement.
It shows a sleep apnea indicator with a risk level and marks possible breathing pauses with their time. That is a screening hint you can take to a doctor, not a diagnosis. Sleep apnea can only be diagnosed by a qualified medical professional.
Your sleep audio is analysed on the device. Your data is not sold and not used for advertising, and you can delete it in the app. Optional account sync and an analytics consent exist; details are in the privacy policy.
SleepTrace runs on iPhone and Android and is fully localised in 14 languages. An Apple Watch is optional and adds heart rate, HRV and blood oxygen via Apple Health; it is not required for sleep tracking.
SleepTrace is a wellness app and does not diagnose, treat or prevent any medical condition. If you are worried about your sleep or breathing, speak to a qualified healthcare professional.