I echo the other review, though maybe it has gotten better by now with a larger dataset to work from. When I used it in Oct 25, it was not able to accurately distinguish different parts of my body and joint angles even if I set up everything perfectly with good lighting and distinguishable clothing. I thought I was going crazy trying everything to change my stroke until I realized it was not reading my stroke right in the first place. Additionally, although Mark is a good researcher and can identify problems with technique, he isn’t an expert coach in fixing those problems, so the tips for improvement are quite limited.

his product feels completely raw and underdeveloped — hard to believe they’re charging a premium for it. The so-called “AI” serve evaluation gives ridiculous and inaccurate feedback; I even tested it by recording a player who didn’t serve at all, and it still produced detailed “issues” in every stage of the serve. It’s a great idea in theory, but in its current state, it simply doesn’t work. Definitely not worth $60 a month — and by the way, the video processing alone takes a good 15 minutes.

This buggy app which doesn’t work is behind a 300$ dollar per year subscription. Insanely steep price for something that doesn’t help your game at all. Much less worth 30 dollars a month. Feels like a rush job. There are definitely better alternatives to this.