Something's off with your sleep. You just can't see what.
You spend eight hours in the dark, and still wake up exhausted, with no idea why. Is it a breathing stutter? A noise you don't remember? Snoring? A night quietly broken into pieces? So you change things at random and hope for a miracle. The cause is hiding in the hours you sleep right through.
SleepTrace makes that night visible: what happened, when, and the one thing worth changing tonight, instead of guessing.
Waking at 3 a.m.Snoring you don't hearBreathing pausesRestless, broken nightsTrouble falling asleepNoise in the room
The difference
From guessing to knowing.
Without SleepTrace
You're flying blind.
Eight hours in bed, and no real idea what happened in them.
Just a number of hours, nothing about quality
No idea what woke you at 3 a.m.
You change things at random and hope
With SleepTrace
You can finally see it.
One night of audio, turned into a clear picture.
Your sleep phases, estimated from the sound of your night
The snoring and possible breathing pauses you never knew about
One science-backed thing to change tonight
What we do differently
Five things most sleep apps won’t tell you.
Sleep data is personal. Here is exactly where we stand, so you can compare us against anyone.
01
Privacy is a setting, not a promise
Your night's audio is analysed on your device. Whether any of it is ever used to improve the algorithm is a separate switch that you control, on by default is not our style. Say no and the app still works. Your data is not sold and not used for advertising.
02
A free tier that actually tracks
Every night, not three nights a month. Sleep stages, sleep score, smart alarm and snoring detection are all in the free version, and 3 sound clips a month are playable for free. Most apps put the snoring behind a subscription, that is the part you downloaded the app for.
03
Recommendations, not a chatbot
No generic AI text. A rules-based engine grounded in sleep medicine, AASM scoring standards and CBT-I, the first-line therapy for insomnia, matches what happened in your night to a specific, testable change. Same night, same reasoning, every time.
04
A morning routine, if you want one
Knowing you slept badly at 7 a.m. helps nobody. SleepTrace offers an optional morning routine, free and off until you switch it on, as a next step for the morning.
05
It listens to the whole night
Not a single score at the end. Your sleep stage is estimated from the sound every 30 seconds. Clips of snoring, sleep talking and coughing are saved with their decibel peak and time, and possible breathing pauses are marked with a timestamp, without a clip.
SleepTrace is a wellness app, not a medical device, and does not diagnose any condition.
Features
Everything your night was hiding.
Six tools, one app. Tap through what SleepTrace hands you every morning.
How it works
One night of audio. One clear answer.
Set it on the nightstand and start. SleepTrace listens, analyses on your device, and hands you one insight that actually explains your night.
1
Record
Your phone records the night through its microphone. No watch or band required, the phone on your nightstand is the whole setup. Wear a watch anyway? Its heart data joins the picture.
2
Analyse
On-device AI turns the sound into a visual map of your night and estimates each sleep phase with our own model, every 30 seconds.
3
Understand
In the morning you get the picture: your phases, the sounds from the night, and the one pattern worth knowing, not twelve metrics you have to decode.
Built rightAnalysed on device by our own modelGrounded in sleep science, AASM & CBT-IData not sold, not used for ads
The mechanism
It listens to your night, sound by sound.
A wrist sensor can tell that you moved. It can't hear the room. SleepTrace uses sound only, with no motion sensor: snoring, talking, coughing and the space around you. Every 30 seconds an on-device model estimates your sleep phase from the audio, and possible breathing pauses are marked with their time.
01 · Listen
It records
Your phone captures the night from the nightstand, no wearable.
02 · See
It visualises
Every second of sound becomes a clear visual map of your night.
03 · Understand
Our own algorithm
A model we built estimates each phase from the sound, on your device, every 30 seconds.
Who it's for
You measure training to the watt. Macros to the gram. Sleep, the recovery that powers all of it, you still leave to a guess.
Training · wattsMacros · gramsCalendar · minutesSleep · a guess
For those who treat recovery as a science, not a side effect.
The whole picture
You already know that you sleep badly. This is the why.
Keep your Oura, Whoop or Apple Watch, they're great at the wrist. SleepTrace adds a different signal: sound from the room. That is where the reason behind a rough night can show up.
Your wearable
It tells you that.
A recovery score that says the night was rough, but never why, and never what to change.
Readiness 61: and silence
SleepTrace
It tells you why.
The sounds behind the bad night: snoring, talking, coughing, and a possible breathing pause marked at 03:40.
Possible breathing pause · 03:40
vs
Everything it reads from your night
Sleep phasesREM & deep sleepSnoring & possible breathing pausesHeart rate & HRV with Apple WatchBlood oxygen with Apple Watch
Try for freeFree · iPhone & Android · no wearable, no account to start
Evidence, not alarm
Something concrete to show your doctor.
Snoring and breathing pauses can go unnoticed for years, and they're worth taking seriously. Here's how SleepTrace turns them into something you can actually act on.
The problem
Snoring and breathing pauses happen while you're asleep, so you never notice them.
We make it visible
SleepTrace records the night and saves clips of snoring, sleep talking and coughing, each with its decibel peak and time. Possible breathing pauses are marked with a timestamp.
Hear the clips
Play back the clips, like the snore at 02:14. A possible breathing pause shows up as a marker with its time, for example 03:40.
Show your doctor
Bring the clips and markers to the appointment, not a vague worry.
SleepTrace is a wellness app, not a medical device. It doesn't diagnose, it surfaces signals and clips you can review with a qualified professional.
No catch
Start in seconds. Stay because it works.
Your sleep audio is analysed on your device. Your data is not sold and not used for advertising, and you can delete it in the app.
No account needed to startCancel anytimeAnalysis runs on your deviceYour data is not sold
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Smart alarm
A smart alarm is included.
SleepTrace includes a smart alarm with a wake-up window you set yourself.
Sound familiar?
Three questions most sleep apps quietly leave unanswered.
01
Do you often wake around 3–4 a.m., for no reason you can name?
Yes
02
Do you wake up feeling like you barely slept, even after a full eight hours?
Yes
03
Has someone told you that you snore, and you had no idea it was happening?
Yes
SleepTrace doesn't answer with a score and a shrug. It records the night and shows you the evidence, so the answer stops being a guess.
Even more
The depth a data-minded sleeper wants.
Beyond phases and sounds, SleepTrace quietly does a lot more for your night.
Breathing Insights
Possible breathing pauses are marked with the time they happened, next to a sleep apnea indicator with a risk level. Something to talk through with your doctor.
Screening hint · not a diagnosis
Apple Watch metrics
Pair an Apple Watch to add heart rate, HRV and blood oxygen to your night via Apple Health.
Premium
Sleep Shield
Optional and free. Pick the apps that keep you scrolling. Sleep Shield closes them shortly before bedtime, while your night is recording and for a set time after you wake. You choose the parts, the nights and the minutes.
Needs iOS 26.5 or later
Morning Routine
Optional and free. Build a short routine from tasks, affirmations, a reading, a few guided breaths and an intention you set the evening before. It runs after your morning mood check, one step per screen, and stays off until you switch it on.
Science-backed tips
Recommendations grounded in sleep medicine and CBT-I, small, specific steps, not vague advice.
Streaks & milestones
Keep a tracking streak alive, with milestones at 3, 7, 14, 30, 60 and 100 nights.
Sleep sounds
Drift off to calming soundscapes with an auto-off timer that stops once you're asleep.
Smart Alarm
An alarm with a wake-up window you set yourself.
Live Activity
See tracking on your Lock Screen and Dynamic Island, all through the night.
Apple Health sync
Reads and writes your sleep data with Apple Health, so everything lives in one place.
Try for freeFree · iPhone & Android · no wearable, no account to start
Just launched
Brand new, judge it on your first night.
No inflated review counts, no borrowed hype. SleepTrace just launched: sleep phases estimated from sound, no wearable needed. Try it tonight and judge it yourself.
AI-generated image
Worldwide
Available in 14 languages.
SleepTrace speaks your language, fully localised, from the app to the science.
Free includes night tracking, sleep phases and 3 playable clips a month. Premium unlocks unlimited clips, all insights and long-term trends, for less than one bad coffee a week.
Correct. SleepTrace uses only your phone's microphone. You set the phone on your nightstand and start tracking, no watch, ring or band is required. If you wear one, SleepTrace reads its heart rate and HRV from Apple Health alongside the audio.
The app turns the night's audio into visual sound patterns and runs them through our own on-device model that estimates your sleep phase, awake, light, deep or REM, every 30 seconds. More in how sleep phases work.
No. SleepTrace is a consumer wellness app for understanding your sleep, it does not diagnose or treat any condition. The snoring and breathing features are for awareness, and the sleep apnea indicator is a screening aid, not a diagnosis. If you have a health concern, please speak with a doctor.
Tracking is designed to run overnight with your phone on the charger, as most people keep it anyway. Recordings are managed efficiently, and you can delete clips and nights at any time to free up space.
Audio is analysed on your device. Your data is not sold and not used for advertising, and you can delete everything from inside the app. Optional account sync and an analytics consent exist; details are in our privacy policy.
Yes, SleepTrace is live on the App Store for iPhone and on Google Play for Android, free to download.
Sleep Shield is an optional, free feature on iPhone that closes the apps you pick around your sleep. You allow Screen Time access, choose the apps in Apple's own picker, and set when they close: up to an hour before bedtime, while your night is recording, and for 10, 20 or 30 minutes after you wake. With the evening part on, SleepTrace sends a notification 15 minutes ahead. If you open a closed app in the evening, you can take 15 more minutes, twice a night. Skip today is always there too: you confirm it in SleepTrace, and your apps stay open for that night and the morning after. SleepTrace never sees which apps you chose, because Apple only hands it encrypted placeholders. Sleep Shield needs iOS 26.5 or later.
The Morning Routine is optional, free and stays off until you switch it on under Profile. You build it from five kinds of steps: a task with an optional daily reminder, an affirmation, a reading, a few guided breaths, and an intention. You write the intention the evening before, when you start tracking, and it comes back to you in the morning. After your morning mood check the routine runs one step per screen, and each step moves on with a tap. If you leave it off, it never interrupts you.
No, most people who reach for a sleep app already try hard. The problem usually isn't willpower, it's that you can't see what's actually happening at night. SleepTrace replaces guesswork with a concrete sleep plan you set yourself, so you're working with data instead of more self-discipline.
It's not about who's right. SleepTrace records what actually happens, so instead of a back-and-forth you both get the same evidence, proof it isn't something you're doing on purpose, and a concrete recording to bring up with a doctor if it keeps happening.
Available now
Master your sleep tonight, without a wearable.
Download SleepTrace free on the App Store or Google Play and turn tonight into real answers about how you actually sleep.
