Check Your Posture Free — No Account Needed

The fastest posture check available online runs entirely in your browser. unhunch uses your webcam and on-device AI to score your posture in real time — no signup, no app download, and no video ever leaves your device.

What a browser-based posture check actually measures

Most posture discomfort from screen work comes from two patterns: forward head position (chin jutting toward the screen) and rounded shoulders (upper back curving forward). Both shift load onto the muscles of your neck and upper back, which fatigue over hours. A browser-based tool uses your webcam feed to estimate the positions of key joints — ears, shoulders, spine — and compares them against a neutral baseline. unhunch runs this analysis continuously at video frame rate, so it catches the slow drift into a slouch that a one-time setup check cannot.

Why no-signup matters for a posture tool

Signup friction kills habit formation. If checking your posture requires logging in, most people skip it after the first week. A no-account tool removes that barrier: open the tab, allow camera access, and you have a live score within seconds. unhunch is designed around this principle. The free trial starts immediately with no credit card. Personal calibration — which adapts the scoring to your specific camera angle and body proportions — takes about 30 seconds and is stored locally in your browser. Nothing is sent to a server.

On-device processing: what it means for your privacy

Video is never uploaded. unhunch runs MediaPipe, a machine learning library, directly inside your browser tab. Your CPU or GPU does the pose estimation locally; the camera feed never reaches a server. The moment you close the tab, processing stops. This matters because a posture tool that runs all day has access to everything visible in your workspace. On-device processing means that footage stays on your device — a meaningful difference from tools that stream video to a cloud analysis endpoint.

How to get an accurate reading from your first session

Camera placement significantly affects accuracy. Position your webcam so your face and shoulders are both visible — a laptop screen at roughly arm's length works well. Avoid strong backlighting (a bright window behind you), which reduces the model's ability to detect shoulder position. After launching unhunch, run the calibration step: sit in your best upright position and set it as your baseline. The tool then scores every subsequent frame relative to that reference. Personal calibration is what makes continuous monitoring more useful than a single static posture photo.

• Place the camera at eye level or slightly below — not looking down at you.
• Ensure your face and both shoulders are in frame.
• Calibrate in your best seated posture, not an exaggerated one.
• Avoid strong backlight — sit facing a window, not with one behind you.

Free trial vs. paid: what you get without spending anything

unhunch's 30-day free trial gives full access to every feature: live posture score, configurable slouch alerts with sound and OS notifications, and the always-on-top floating monitor for Chrome and Edge. No feature is locked behind the trial wall. After 30 days, a one-time payment of $14.99 unlocks lifetime access with a 7-day money-back guarantee. There is no subscription. For most users, the trial period is enough to know whether continuous posture feedback fits their workflow.

FAQ

How does a browser-based posture check work without uploading my video?

Browser-based posture checking uses on-device machine learning to estimate joint positions from your webcam feed. In unhunch, MediaPipe runs entirely inside your browser tab — no video frames are sent to a server. The tool scores your posture live, triggers slouch alerts, and stops all processing the moment you close the tab.

Is a free online posture tool accurate enough to be useful?

Browser-based pose estimation reliably detects the forward-head and rounded-shoulder patterns responsible for most screen-work neck and upper-back discomfort. It cannot replace a clinical assessment, but it catches the slow drift into a slouch after an hour at the desk — the pattern that benefits most from real-time feedback. Personal calibration improves accuracy by adapting the baseline to your camera angle and proportions.

What do I need to use a free posture check tool online?

You need a device with a front-facing camera — a laptop, desktop with webcam, or tablet — and a modern browser such as Chrome or Edge. No app download, account, or credit card is required to start. unhunch's 30-day free trial launches immediately from the browser and includes the live posture score, slouch alerts, and floating monitor.

How is real-time posture coaching different from just trying to be more mindful?

Willpower and mindfulness rely on you consciously remembering to check your posture, but attention fades after a few minutes, especially when you're focused on work. unhunch's real-time detection catches slouching objectively—you don't have to remember or notice it yourself. This continuous, automatic feedback eliminates the gap between intention and action, making it far easier to stay in good posture without constant conscious effort. Over time, you internalize the corrections and need fewer alerts.

Does unhunch work for different body types and sitting styles?

unhunch uses on-device AI that learns your individual baseline and adapts to your body and sitting position. Rather than enforcing one rigid posture standard, it detects your slouching relative to your neutral alignment. This means it works for different heights, body shapes, and even different chair types—the system recognizes what good posture looks like for you specifically, and alerts you when you're drifting away from it.