Meet Unclench — A check-in for the jaw, all day

Health And Fitness

Unclench

A check-in for the jaw, all day.

Every feature, from the first launch.

No account, no login, no cloud. Everything runs on your device and works fully offline — nothing in this post is hidden behind a wall.

What Unclench does

Unclench interrupts daytime jaw clenching at the moment it happens, instead of waiting for you to do exercises later.

Up to 23% of adults clench their jaw during the day — usually unconsciously while focused on a screen — and TMJ disorders affect 12 million Americans. Every existing TMJ app focuses on scheduled exercise sessions (JawBuddy's 21-day program, JawSense exercise library, Kieferfreund). None of them ask you, in the middle of your workday, 'check your jaw right now.' That's the thing that retrains the habit.

What Unclench does:

— Random check-ins throughout the day. Pick a frequency (every 10/20/30 minutes) and active hours. The app pings you with a haptic and a 5-second drill: tongue on the roof of your mouth, teeth slightly apart, lips together. Tap whether you were clenched when the ping fired. — Pattern surfacing. After a week, see your clench-rate by hour of day. Some people clench at 11am on conference calls; some after 4pm. The data identifies the trigger window. — Optional nighttime grinding check. Place the phone face down on the nightstand; AVFoundation samples ambient audio in 30-second windows and flags peaks consistent with grinding using an on-device CoreML classifier. No audio ever leaves the phone. — Jaw exercise drawer. Six clinician-recommended TMJ stretches with photos and timed cues. Open whenever; not required. — Apple Watch haptic option. The wrist tap is more catchable mid-meeting than a phone notification.

All offline. SwiftData log on-device. No subscription. No 21-day program guilt loop. Just the check-in your jaw needs.

A look inside

Tap any screenshot to open the full-resolution version.

What's inside

Check-in — Random haptic + 5-sec drill; tap whether you were clenched
Schedule — Set active hours and frequency (every 10/20/30 min)
Clench heatmap — Hour-of-day heatmap of clench rate over the last 14 days
Night grinding — Face-down phone samples ambient audio; CoreML flags grinding peaks
Stretch drawer — Six clinician-recommended TMJ exercises with timed cues

Why we built it

Awake bruxism causes TMJ pain in millions of US adults, but every TMJ app uses scheduled exercise programs — none interrupt clenching at the moment it's happening, which is the only intervention that retrains the unconscious habit.

What makes it different

Unclench is the only TMJ/bruxism app that fires randomized check-in haptics during the workday (configurable hours + frequency) to interrupt unconscious clenching in vivo and logs your clench-rate by hour to surface trigger windows — JawBuddy is a 21-day scheduled program, JawSense exercise library requires their hard…

Who it's for

Anyone who wants honest tracking without a coach, a subscription, or a streak guilting them at 11pm.

In one line: A check-in for the jaw, all day.

Try it

See the Unclench app page for the full feature list, the info table, and support links.

Use Unclench, found a bug, or have a feature request? Comments are open below — anonymous is fine.