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5.0 on App Store

Sleep Tracker for iPhone.
Wake Up Knowing Why.

AI sleep tracking with Apple Watch. Detects snoring, analyzes sleep stages and sounds. All data stays in your private iCloud — we never see it.

Sleep tracking with snore detection for iPhone · No Apple Watch required

Snollo — AI sleep tracker app for iPhone and Apple Watch
How It Works

Set it up in 10 seconds. Sleep. Learn.

Wear your Apple Watch. Place your iPhone near you on the bed. Snollo handles the rest.

Step 1

Start Sleep Tracking

Tap once before bed. Your iPhone listens. Your Watch tracks heart rate, movement, and breathing.

Step 2

AI Works While You Sleep

Overnight, entirely on your iPhone — no third-party servers. Every sound identified. Every sleep cycle mapped. Saved to your private iCloud.

Step 3

Wake Up Knowing Why

Open Snollo in the morning. Your score is ready. Your clipped sounds are waiting. Listen back and finally understand your nights.

Privacy First

Your Sleep Data Stays Yours — Privacy-First by Design

We built Snollo so we literally cannot see your data. No accounts, no central servers, no selling your information.

Your Microphone Input
Your iPhone On-Device AI
Your iCloud Private Storage
App Preview

See your sleep tracker in action.

Sleep quality score with REM, Deep, Light sleep stages chart and heart rate tracking
Sleep Quality & Stages

Score, REM, Deep & Light cycles with heart rate

AI snoring detection and dream talk recording with sound timeline
Sound Detection

Record snore, breathing & dream talk

Sleep sounds mixer with white noise, nature, and ambient sound categories
Sleep Sounds

Mix white noise, nature & ambient sounds

Sleep statistics with weekly insights, AI recommendations and sleep history
Smart Insights

AI-powered statistics & recommendations

Wall of Love

What Snollo Users Are Saying

★★★★★

"This app changed my mornings. The sleep stage breakdown is eye-opening, and knowing my data is private makes me feel secure."

S
Sarah L.
Feb 12, 2026
★★★★★

"Finally found out why I was so tired. The snoring detection caught exactly what was happening in the middle of the night."

M
Mark D.
Jan 28, 2026
★★★★★

"Clean interface, no subscriptions forced down your throat, and the Apple Watch integration is flawless."

E
Elena G.
Feb 05, 2026
FAQ

Frequently Asked Questions About Sleep Tracking

Do I need an Apple Watch to use Snollo?
No — Snollo works as a sleep tracker for iPhone without an Apple Watch. Just place your iPhone on the nightstand and it will detect snoring via microphone. The Apple Watch adds more accurate heart rate data and detailed sleep stage breakdowns (REM, Deep, Light), but it is entirely optional.
How accurate is the snoring detection?
Snollo uses Apple's CoreML framework to analyze audio on-device in real time. In our testing, it accurately identifies snoring, breathing patterns, coughing, and sleep talking. You can listen back to any detected sound to verify it yourself.
Is my data secure?
Snollo processes everything on-device using Apple's CoreML. All saved data is stored in your private iCloud account. Snollo has no servers and no access to your audio recordings or sleep history.
Does it drain my battery overnight?
In our tests, overnight iPhone battery drain is typically 10–15%. We recommend keeping your phone plugged in if you use the continuous audio recording feature.
Does Snollo share my sleep data with anyone?
Snollo is built so it cannot access your data. All audio processing happens on your iPhone using Apple's CoreML. Recordings are stored exclusively in your private iCloud container. Snollo has no servers, no accounts, and no mechanism to transmit your sleep data — ever.
What sleep stages does Snollo detect?
Snollo tracks Light sleep, Deep sleep (slow-wave), and REM sleep using data from your Apple Watch heart rate and motion sensors. Each morning you get a full breakdown of your sleep architecture — how long you spent in each stage and how it compares to your personal baseline.
What's included without Premium?
The core app includes AI sound detection, basic sleep stages, Apple Watch integration, and 7 days of history — no subscription required. Premium adds unlimited recordings, full history, the complete sound library, and detailed weekly stats.
Does this sleep tracker work without Apple Watch?
Yes — Snollo is a sleep tracker for iPhone without Apple Watch. Place your iPhone on the nightstand and it uses the microphone for snoring detection, breathing analysis, and sound classification. Apple Watch adds heart rate-based sleep stages (REM, Deep, Light) but is entirely optional.
Can Snollo detect snoring without Apple Watch?
Yes. Sleep tracking with snore detection on iPhone works fully without Apple Watch. Snollo's on-device Core ML model analyzes microphone audio in real time — classifying snoring, breathing, coughing, and sleep talking. Apple Watch improves sleep stage accuracy but is not required for snore detection.

Try it tonight.

Your data stays in your iCloud. Snollo has no servers to send it to — and that's by design.

Download on App Store
★ 5.0 Rating Private by design Apple Watch Sync