Notice when you lean closer to the screen during computer work. Works with your phone camera, laptop camera, or webcam. It runs entirely in your browser and the camera feed never leaves your device.
Prop your phone at desk height for front checks, or turn it sideways for side-view posture scans. Same test, same URL, no app.
Open phone linkThis check reads your distance drift from a short on-device camera scan and compares it against an evidence-based comfort range (< 12%). The model maps the joints involved and averages the angle so a single fidget doesn't skew your result.
Green means you're inside the healthy range. Amber means you're drifting and it's worth a small adjustment. Coral means the angle is past the comfort line for long enough to cause strain. Your number updates live, so you can watch a fix land in real time.
One test reads one signal. If you want this checked continuously — combined with posture, eye strain and fatigue, with live nudges and a progress history — that's what Pro does. It turns a one-off number into a habit that holds.
Small text, low screens, laptop-only setups, and fatigue can pull you closer to the display without you noticing.
This check estimates relative drift from camera scale. It does not know your exact monitor distance.
No. It compares your visible upper-body scale to a starting baseline and estimates relative drift toward the screen.
Leaning in can pair with forward head posture, low screens, and eye strain habits, so the tool prompts a setup adjustment when drift is visible.
Sit in your normal working position, keep your upper body visible, and start the check before you begin leaning toward the display.