squatcheck
Upload a side-on squat video. It finds the safety bar and each rep, then measures the angle of the top of the thigh against the bar at the bottom of every rep.
Drop a squat video here, or tap to choose one
Film from the side with the camera still and the whole body and safety bar in view
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Once a video is analyzed, each rep is found from the path of the hips, and the angle of the top of the thigh against the safety bar is measured at the rep's lowest point.