From video to motion
Motion Lab estimates the position of your body through the swing and lays that on top of your own video. You can scrub frame by frame, slow it down, and see the phases of the motion side by side.
It runs on your device first — your video does not have to leave your phone for the basic read to work.
What to look at
Start with the phase markers (setup, top, contact, finish). Most useful insights come from comparing two frames — where you were at the top versus where you were at contact.
The overlays are a guide, not gospel. Trust them most when the video is clear and the whole motion is in frame.