Film one slow squat with the whole body in shot, pick which angle you filmed, and get a score out of 100 with the parts to fix shown in red. The video is analysed on this device and never uploaded.
The scoring measures depth, knee position, trunk lean and heels against coaching thresholds — a movement aid, not a medical assessment, and it never calls anything an injury. Pose reading from a real phone video is the part still being calibrated against real footage, so treat the number as a helpful second opinion, not a verdict. The one-time model download needs a connection; the video itself never leaves this device.