How to record teeth grinding at night

Before you record: decide what you want to learn

A useful question is “Was there a sound I want to listen back to?” A recording cannot answer “How much force did my jaw produce?” or “Do I have sleep bruxism?” Those are different questions requiring different evidence. Start with the limits of phone-based detection if you are unsure what to expect.

If you share a bedroom, agree on recording with the other person first. A microphone can pick up their speech and movements too. Choose the parts you actually need to review, and consider who could hear a clip before sharing it.

Set up your phone for a Sleep Session

1. Choose a stable bedside surface. Keep the phone close to your bed with its microphone uncovered. Avoid placing it under bedding. There is no single tested distance that works for every phone, room and sleeping position.
2. Follow the charging and readiness prompts. GrindMute asks you to keep your phone charging. Follow your phone manufacturer's charging guidance and keep the phone and charger on an appropriate, uncovered surface.
3. Allow microphone access. GrindMute needs it to listen. If the app reports that the microphone is unavailable, check whether another app is using it.
4. Check Android background settings. Follow GrindMute's prompt to allow it to keep running and turn off battery optimization for the app. Android may otherwise interrupt a session to save power. The exact settings labels can vary by phone.
5. Start the session and confirm its state. Check that the app is listening. If you selected a delayed start, the microphone stays off during the countdown. Choose whether you want optional alert sounds before settling down.

Keep track of obvious background sound, such as a fan or music. You do not need a perfectly silent room, but a change in the recording environment can make two nights harder to compare.

Review possible sounds the next morning

GrindMute analyzes audio on your phone and saves short possible events for review. Listen to each clip and label what you hear. If you cannot identify it, keep that uncertainty in your notes instead of treating it as confirmed grinding.

Fabric movement, speech, snoring and other bedroom sounds can be captured. Use the guide to possible teeth-grinding sounds as context, rather than an audio diagnosis. The number of clips is a count of what the app surfaced under those conditions, not a complete measurement of jaw activity.

Free access lets you review the night you just recorded. Pro adds past-night playback, trends, PDF reports, audio sharing and data backup. The app shows current purchase options.

What if there are no clips, or the session stops?

Check the session state, microphone access and phone placement. The app may have been interrupted, the microphone may have been covered, or sounds may not have been loud enough to capture. Follow any microphone or background-access message in the app.

A quiet report does not exclude teeth grinding, and clenching can be quiet. Write “no clips surfaced” or “session interrupted” in your notes. Neither observation should be converted into “no bruxism.”

Turn a recording into a useful observation

Record the date, what you heard, whether the session ran as expected and any symptoms you noticed. The teeth-grinding sleep diary offers a simple format for separating those facts.

If you have tooth damage, sensitivity or pain, seek dental advice even if your recordings are quiet. The NHS guidance on when to see a dentist explains why symptoms and a partner's observations matter. Do not wait for an app to confirm a concern.

Sources and product notes

These setup instructions were checked against GrindMute's microphone, charging, background-access and session-readiness flows on September 10, 2026. Phone settings and app interfaces can change.

• NIDCR: Symptoms, dental assessment and the role of sleep studies
• NHS: Teeth grinding and when to seek dental advice
• GrindMute FAQ: Setup, privacy and feature availability

Prepared by GrindMute Editorial. This is a product-use guide and general information, not a clinical test or medical advice. Read our editorial policy.