Monitor Your Snoring Overnight — Free

A free, web-based snoring detector and sleep recorder. Monitors you all night, scores your snoring from 0 to 100, flags possible apnea events and shows trends across nights — no app install, no account, no subscription.

How to use

1

Plug your phone into a charger and open this page before bed.

2

Run the 4-step wizard — test mic, calibrate room noise (10 s of silence), note tonight's factors, place the phone ~50 cm from your head.

3

Tap "Go to sleep". The page listens in dim-red screen mode. Wake Lock keeps it on.

4

Tap STOP in the morning to generate your Snore Score report.

5

Review your top episodes, apnea warnings and trends. Export a PDF for your doctor if needed.

Fall asleep with confidence, wake up with data

Screening tool only Not a medical diagnosis. If you suspect sleep apnea, consult a sleep specialist. Polysomnography is the only reliable diagnostic.

Detect snoring episodes, flag possible apnea, track your Sleep Score night after night

Your previous nights

No nights recorded yet. Tap "Start tonight" when you are ready to sleep.
After your first night, you can compare results and see factor correlations.

Test your microphone

Allow microphone access. We will listen for snoring but nothing will be uploaded automatically.

Calibrate room noise

Stay silent for 10 seconds. We measure your room background to reject false alarms from traffic, fans, or your refrigerator.

Tonight's factors

Check anything that applies. After 5+ nights we show correlations — what makes you snore more.

Place your phone

Put the phone about 50 cm (20 in) from your head with the microphone facing you. Keep it plugged into a charger — overnight monitoring drains battery.

Not too far — we need clear audio
Microphone unobstructed (not under a pillow)
Plug into a charger
Airplane mode is OK — we work offline

Screen stays on in dim red mode — easy on your eyes if you wake up.

⏰ Smart alarm (optional)
We can wake you in a 30-min window when you are NOT snoring (lighter sleep phase). Set your latest acceptable wake time.
30-min smart window
🔊 Anti-snore sound
Want to relax before sleep? — Try our breathing exercise
📡 Partner observer (P2P)

Your partner on another device sees snore episodes in real time. Peer-to-peer connection — data does not go through a server.

Good morning

Summary

0 / 100
Snore Score
Score = 100 − (0.3 × snoring%) − (40 × loud-share) − (5 × apnea-events, max 30). Max 100 = silent night.
—
Total time
—
Time snoring
—
of the night
—
Apnea-like events

Snore Score

Quiet
0%
Light
0%
Loud
0%
Epic
0%

Sound timeline

Tap any bar to hear the loudest moment in that interval

Hourly intensity

00:0006:0012:0018:0023:59

Top loudest episodes

Watching partner's night

Connecting to partner's recording…
0
Episodes
100
Current Score
0
Recording
Quiet so far. Episodes will appear when partner snores.

Features

Transparent Snore Score 0–100 with the exact formula shown on screen — no black boxes Apnea-like event detection — 10+ second pauses after loud snoring flagged in red Interactive timeline and hourly heatmap; tap any bar to replay the loudest moment Factor correlation engine — learn what alcohol, nasal congestion or sleep position does to your Score

Frequently Asked Questions

Is this a replacement for a medical sleep study?

No. Polysomnography (a hospital sleep study) is the only way to diagnose obstructive sleep apnea — it measures airflow, oxygen saturation, brain waves and heart rhythm. Our tool is a screening aid. If we flag apnea-like events or your Score stays low for weeks, see a sleep specialist.

How does the detector tell snoring from other sounds?

Snoring vibrates at 80–500 Hz (soft palate and uvula) with clear harmonics. Our bandpass filter focuses there, and we measure the low-to-high-frequency energy ratio to exclude speech, TV, traffic or a barking dog. Event duration must be 0.5–4 seconds — shorter transients like door slams are ignored.

What does the Snore Score mean?

A 0–100 summary. 100 means a silent night. Penalties apply for the percentage of the night spent snoring, the share of loud or epic episodes, and any apnea-like events. The formula is shown in the report itself — no black boxes.

Does it work if I share a bed with a partner?

Partially. We cannot reliably separate your snoring from your partner's. Put the phone on your side of the bed with the microphone facing you. Interpret trends over time rather than exact numbers.

What happens to the recorded audio?

Audio is processed by the Web Audio API in your browser. We save compact audio clips (about 4 seconds each) for the loudest 20 episodes into your browser's IndexedDB so you can replay them in the morning. You can delete a session at any time.

How much battery does it use?

About 8–12% per hour with the screen kept on in dim mode. Plug into a charger before sleeping. If battery drops below 15%, we warn you so the session is not lost.

What is an "apnea-like event"?

A silence of 10 to 90 seconds that immediately follows loud snoring (over 60 dB). This pattern is common in obstructive sleep apnea — the airway briefly collapses and breathing stops. It is not a diagnosis, only a signal to see a doctor for a proper evaluation.

💡 Want us to improve this tool just for you?

We can — and it's free! Just send us a quick message with your idea. If you'd like to discuss it in detail, leave your email and we'll get back to you. You can stay anonymous.

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Who is this tool for?
🏥 Healthcare Professionals 🧘 Wellness & Meditation
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