Sleep tracking that respects your privacy.

Snozzt records overnight, classifies what it hears on-device, and never sends a single byte of audio anywhere.

Your audio stays on your phone.

Sound analysis runs in real time using Apple's on-device Neural Engine. Snozzt only stores event metadata โ€” timestamp, what was detected, how confident the model was. No recordings. No uploads. No cloud.

What Snozzt detects, tracks, and shows you.

On-device sound classification

Snoring, sleep talking, coughs, breathing, sirens, alarms, barking โ€” all classified locally. No round-trip to a server.

Sleep score & weekly trends

Every session gets a 0โ€“100 score from duration, restfulness, snoring, and disruptions. Charts show how your nights compare.

Smart wake-up

A time-sensitive alarm cuts through Sleep Focus, and a chime plays in-app when you're already up. Background recording keeps going even with the screen locked.

Detailed event timeline

Each session detail shows every detected sound on a chart, colored by class, with timestamps and confidence โ€” so you can spot what woke you and when.

Five languages, zero accounts

English, Simplified & Traditional Chinese, Japanese, Korean. Sign in with Apple is the only login โ€” no email lists, no tracking pixels.

Optimized for overnight

Voice-activity detection, classifier subsampling, and tuned audio buffers keep battery drain in check across an 8-hour session.

Get Snozzt

Available soon. Join the beta to try it early.

The TestFlight link above is live now. App Store and Google Play will go live as each platform's review completes.

Support my work

Snozzt is a personal project, built and maintained in spare hours. If it helps you sleep a little better, a small contribution genuinely helps it keep going.

Both platforms are external โ€” clicking opens their site in a new tab. Snozzt itself never charges for the free tier.