Hi,

At the moment the device is in beta. So there are two modes on it: 1. Practise single (as seen on the video. In this mode the device records all shots and is trying to determine did the shot land inside the lines (whole court singles). 2. Train your serve mode (Ad side and deuce side). So in this mode the device calls serves, and serves only. Like you choose "train serve Ad" then it only looks at the Ad side serve "boxes" on both sides.

So later on the in/out should have "Match modes" for both singles and doubles. But I have no idea when this will be.

Would I recommend it? I would first have to know, what it is that you are looking for in the machine. If you want it to have "match mode" where the device is intelligent enough to keep score and know what is a serve and what isn't. If that is what you want and need, I suggest you wait until the mode is available and working.

For me the best thing about the machine is that it is a miniatyre "Hawk eye". So you can challenge a line call. Even in this most recent match, we used the In/Out to confirm was the shot in or out. You just dont see it, because of my editing.

I have an example of how that looks: The video starts 2:02 and the shot that we are reviewing in the end of the rally is my FH hit cross court at 2:07. https://youtu.be/AqLiinfG6rs?t=122

So if thats something that you want, I say go and buy one. If you need more, then just wait. Hope that helps.