Your first night, from download to morning.
Snore Timeline records your sleep sounds all night and turns them into an interactive timeline you can explore in the morning. One good recording teaches you more about your night than weeks of guessing. This page walks you through that first recording and the setup habits that keep every night after it reliable.
Open the app and tap the microphone button at the top of the screen. It sits on a green circle when idle and turns into a red stop button while recording. Tap the same button in the morning to stop.
Before your first recording, iOS asks for microphone permission. Allow it; the record button stays disabled until you do. You also need about 500 MB of free storage to start a session. If space runs low, the app tells you how many megabytes you have free and waits until you clear some room.
Aim for at least four hours of sleep in a session. Shorter recordings still work, but a full night gives the app the most to work with and gives you the clearest picture of how your snoring changes over time.
Open a recorded night and the whole thing sits on one screen: the timeline up top, then your nightly summary below. Step through it one piece at a time.
Once you've recorded a night, the Timeline & Playback page covers reading the waveform in depth, and Episodes & Events explains the groupings you'll see.
While you sleep, on-device AI listens for and labels several kinds of sleep sounds:
Every sound is processed in real time on your phone. Nothing is sampled, skipped, or uploaded. How Detection Works explains the classification and confidence thresholds behind each label.
Place the phone on a nightstand about 1 to 2 feet from your head, plugged in, face-down. Each part of that matters:
Quiet the room where you can. Fans, white noise machines, air purifiers, HVAC, open windows, and a TV left on can mask the breathing patterns the app listens for. When the room sits above 45 dB at baseline, more sounds get labeled Loud Sound instead of snoring.
Start the recording, lock the phone, and sleep. Snore Timeline keeps recording in the background with the screen off. If a phone call or another audio interruption stops the session, the app tries to resume on its own several times. If you switch microphones overnight, for example to a Bluetooth device, recording restarts on the new device.
Two settings protect the session:
If a recording still cuts out overnight, Troubleshooting walks through the common causes.
The app earns its keep over many nights, so it includes tools that take the remembering out of it:
Snore Timeline runs on iPhone with iOS 17.6 or later, and on Android. The app asks for microphone access to capture audio; that's the only permission recording needs. Apple Health and Siri permissions come up only if you turn those features on, and the app records and analyzes fully with microphone access alone.
There are no accounts, no logins, and no cloud services. Everything runs on your device. The Privacy Policy covers the details.