Your Sleep Data, On Your Devices
Most sleep apps send your audio to the cloud. Snollo doesn't. All snore detection and sleep analysis happens on your iPhone using on-device AI — your recordings never touch an external server.
How Snollo keeps your data private
Your Microphone
iPhone captures audio during sleep. Raw audio is never saved to disk or transmitted anywhere.
On-Device AI
Sound classification and sleep-stage mapping run entirely on your iPhone. Nothing about the analysis itself leaves the device.
Your Private iCloud
Results are saved to your own iCloud, under your Apple ID — and they sync across the Apple devices you sign into, under your control.
There is no "Snollo server" step in this flow.
We operate no infrastructure that touches your sleep or audio data. There is nothing to breach, sell, or subpoena.
What stays beyond our reach
Your raw audio — classified in memory on your iPhone and discarded; clips you save go to your iCloud
Your sleep scores or history — stored in your own iCloud, under your Apple ID
Your sleep stage data — written to Apple Health under your Apple ID
Who you are — Snollo uses the Apple ID you already have, no separate account
Your raw GPS coordinates — used only to fetch weather for your sleep timeline; we store the resulting weather, not your location
How the top sleep apps handle your data
Based on App Store privacy labels, Common Sense Privacy evaluations, and published privacy policies.
| App | Cloud Audio Processing | Account Required | Data Selling | Ad Tracking |
|---|---|---|---|---|
| Snollo ★ | ✓ No | ✓ No | ✓ No | ✓ No |
| SnoreLab | ✗ Yes | ✓ No | ? Unclear | ✗ Yes |
| Sleep Cycle | ✗ Yes | ✗ Yes | ? Unclear | ✗ Yes |
| SleepWatch | ✗ Yes | ✗ Yes | ✗ Yes | ✓ No |
| AutoSleep | ✓ No | ✓ No | ✓ No | ✓ No |
| Pillow | ✓ No | ✓ No | ✓ No | ✓ No |
Sources: App Store privacy labels, Common Sense Privacy evaluations, published privacy policies. Last reviewed April 2026.
The private sleep tracker you've been looking for.
Just your sleep data, classified on your iPhone, stored in your own iCloud. Snollo uses the Apple ID you already have — no separate Snollo account.
Download Free on the App Store