StopSlouching

Real-time posture coaching with your webcam. 100% in-browser — nothing leaves your machine.

Sit like you mean it — without sending a single frame to the cloud. Stop Slouching watches your posture through your webcam, runs an on-device pose model on your GPU, and gives you a targeted 30-second stretch when you slump. Nothing leaves your machine. There is nothing to disprove because there is nothing to upload — open DevTools → Network and watch for yourself. Why the Chrome extension - Posture-aware across every tab — detection keeps running when you switch tabs, not just on the app's page. - Same engine as the web and desktop apps. One subscription covers all three. - Updates silently in the background. No extra window to manage. How it works 1. Calibrate in 3 seconds. One snapshot of your good posture becomes your personal baseline. 2. Detect in real time. Pose detection runs on your GPU at 10+ fps. Angles, not raw distances, so your distance from the camera doesn't matter. 3. Coach, don't nag. Five sustained seconds below your threshold triggers a 30-second stretch — routed to whichever sub-score (head, shoulders, or uprightness) is weakest. What you get - Live posture score with three sub-scores: head over shoulders, shoulders level, uprightness. - 11 chair-only stretches — neck rolls, chin tucks, scapular squeezes, thoracic extensions, eye breaks. No floor work, no equipment. - Configurable slouch threshold (forgiving ↔ strict) and sustain time (5s / 10s / 15s / 30s). - Alert styles: Notify, Stretch, or Both. Sounds: Soft, Bell, Urgent, Cricket, Silent. Optional voice nudges. - Session timer, daily total, and streak tracking. Privacy - 100% on-device. Frames never leave your browser. - Zero uploads — verifiable in DevTools. - Camera access only while the extension is active. Free trial: 3 minutes of lifetime detection, no card required. Pro unlocks unlimited detection across web, desktop, and this extension on one subscription. General wellness tool. Not medical advice. Learn more: https://stopslouching.app