Stance, the posture scanner that keeps your photo to itself

Field notes

The scanner uses one side-profile image to measure head-forward position, shoulder roll, and pelvis tilt, producing a score out of 100 and comparing repeated scans with the same method. Processing is described as fully on-device through Apple’s Vision framework, with no account, upload, or server storage. The page also draws a firm boundary around the product: it reports measured angles rather than diagnosing pain or medical conditions, and treats scan-to-scan change as more reliable than population comparisons.