Okay maybe I'm not using it properly (though it's hard to know since the online help link in the app returns a blank page so there are no available instructions on how to use the app as far as I could find) but when you try to set the path trace, in my case for squats, if you set the circle that tracks the bar on the end of the bar while it's racked, it doesn't follow the bar back when you lift it off the rack and step back to perform the movement. Zero traces. So then I tried setting the circle approximately where the bar will be after I've gotten into starting position. That doesn't really work either, I get a few partial bar path traces but only halfway or so through the movement's range of motion. The bottom of the movement I get nothing. It would make WAY more sense if one could scroll the video to the point where one is in the starting position, where it could be paused, and THEN set the bar trace circle. Again maybe it's operator error but the app doesn't seem to do what I expected. And I paid for the full functionality so I'm not too happy.