A Posture App Built on MediaPipe Pose Detection

unhunch is a browser-based posture app that runs Google's MediaPipe pose-detection model directly on your device, scoring your posture from 0 to 100 in real time without ever uploading your webcam video.

THE SHORT ANSWER

unhunch is a posture app that uses Google's MediaPipe pose-detection model to track your head, neck, and shoulder position through your webcam — entirely on your device. The video never leaves your computer: MediaPipe's machine-learning model runs locally in the browser, converts your pose into a posture score from 0 to 100, and triggers a sound or notification when you slouch. There's no download or signup to start, and an always-on-top floating monitor (Chrome and Edge) keeps the score visible while you work.

  • MediaPipe runs locally in your browser — your webcam video is never uploaded or stored.
  • Real-time posture score (0–100) updates continuously as you sit and move.
  • Slouch alerts combine sound and an OS notification so you notice the drift, not just feel it later.
  • No download, no signup: open it in Chrome or Edge and calibrate to your own posture in seconds.

What is MediaPipe, and why does it power unhunch's pose detection?

MediaPipe is Google's open machine-learning framework for tracking body landmarks — eyes, ears, shoulders, spine — from a live camera feed. It's designed to run directly inside the browser or on-device, without sending frames to a server for processing. unhunch builds on this: the model identifies the key points of your upper body in each frame and calculates the angles between them, which is what turns a webcam image into a single posture score from 0 to 100.

How does on-device detection keep your webcam feed private?

Because MediaPipe runs the pose model locally, your video never has to leave your computer to be useful. unhunch reads the camera feed, extracts landmark coordinates in memory, and discards the frame — nothing is recorded, uploaded, or stored anywhere. This is the core design choice behind the app: a posture tool only works if you leave the camera on for hours, and that's only reasonable if the video itself never goes anywhere.

What does the app actually detect and alert you about?

From the landmarks MediaPipe extracts, unhunch derives a posture score and watches for the forward head tilt and rounded shoulders that build up during long screen sessions. When your score drops below your calibrated baseline, it raises a slouch alert — a sound plus an OS notification — so you notice the drift instead of realizing an hour later that your neck is sore. A personal calibration step lets the model learn what your neutral posture looks like, rather than judging you against a generic ideal.

Posture app vs. wearable posture corrector — which actually works?

A wearable corrector buzzes or tightens when you move a certain way; it reacts to motion, not to your actual posture, and you have to remember to put it on. A vision-based posture app reads your real position continuously through the webcam you already have open, with no strap or hardware involved. Neither replaces a properly set-up desk and chair — both are feedback layers that catch the slouch a one-time setup can't maintain on its own.

Getting started with unhunch's MediaPipe-based detection

There's nothing to install and no account to create before you see your first posture score. Open unhunch in Chrome or Edge, allow camera access, and sit the way you normally would — that becomes your calibration baseline.

Try the MediaPipe-powered posture app

unhunch turns Google's MediaPipe pose detection into a practical feedback layer that runs entirely in your browser — a companion to good ergonomics, not a replacement for it. Start a 30-day free trial with no credit card, then keep it for a one-time $14.99, backed by a 7-day money-back guarantee.

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FAQ

Does a MediaPipe posture app upload my webcam video?
No. unhunch runs Google's MediaPipe pose-detection model directly in your browser, on your own device. Your webcam feed is processed locally to calculate a posture score and trigger alerts — it is never uploaded, recorded, or sent to a server.
Do I need to install anything to use a posture app with pose detection?
No. unhunch works in the browser with no download and no signup required to start — you get a 30-day free trial with no credit card. The always-on-top floating monitor that keeps your score visible while you work is available in Chrome and Edge.
How accurate is MediaPipe at detecting a slouch?
MediaPipe tracks landmarks like your ears, shoulders, and the angle of your neck and spine from the webcam feed. unhunch compares those angles to the neutral posture you set during calibration, so the score reflects a deviation from your baseline rather than a generic ideal — which is what makes it useful for noticing your own specific slouch pattern as it develops.
Can I use unhunch during my regular work day, or just during dedicated posture sessions?
unhunch is designed to run continuously while you work. Simply position your webcam so it can see your upper body and shoulders, then let it monitor in the background. You'll get gentle, real-time alerts when you start to slouch or drift out of good posture, allowing you to stay aware throughout the day—during focused work, video calls, or any seated activity. The more time you spend with the feedback active, the faster you'll internalize better habits.
Can poor posture affect my productivity and mental focus throughout the day?
Poor posture can influence both your physical comfort and cognitive state. When your head and shoulders are forward of their ideal position, your breathing patterns may shift, and blood flow can be subtly restricted, both of which can contribute to mental fatigue and reduced concentration. Many people find that small adjustments to their sitting position noticeably improve their ability to focus during work sessions. Unhunch helps by making you aware of these postural drifts in real time, so you can straighten up and reset your alignment before slouching begins to affect your performance and energy levels.