Comments: I have used the Zepp Sensor for about 6 months. It was a little clunky to start with. The software
updates didn't always work smoothly. With each software update, the product did improve however. More features (eg. 3D serve
analysis), racquet ball hit position etc, and better accuracy with recording shots and shot type. Unfortunately, after 6 months of
use, the Zepp sensor has now died. It won't turn on. It was good while it lasted, but I sense the company hasn't quite worked out
the quality control issues as yet. The new Sony Smart Tennis Sensor and the Babolat Play look like options worth exploring.
Comments: I was an "early adapter" to this product and bought one when it first came out straight from Zepp. I've
used it for all 3 sports (tennis, golf and baseball). It works much better for the other two sports than it does tennis IMO. The first
few months when I used it, it would register 2 serves for every 10 I hit. Not sure how the algorithms can't figure out 90 degrees
difference in positioning. Once I did the updates, the service mode works pretty well. It registers about 7 of ever 10 I hit. It will
give you a rendering of your swing plane that you can spin 360 degrees and overhead. This is what the golf and baseball apps are
all about. This is the only reason I use this now. I also own the Babolat Play and have put the Zepp on it to compare. Not even
close! If I hit 300 balls in a session, the Zepp might record 100 of them. The sweet spot indicator on the Zepp is way off too! It'll
say I have hit 9% in the sweet spot when the Play will say 57%. I'm not the greatest ball striker, but that's a pretty drastic delta.
The good news is, if you get it to work, you can play with any racquet that fits your style. You don't notice the gel butt-cap holder
if you wrap the overgrip on top of it.
Comments: I was pretty skeptical of the mounting system, because it seemed that the silicone over-the-butt-cap
holder would put the unit in the way of everything, but it's just about as close to unnoticeable as it can be -- and I hang my little
finger off the bottom of the butt cap on my serve. Maybe it helps that I put my over grip on top of the holder. First day, I broke the
session up into warm-up, drills, set one, set two, set three, etc., although this was in part to see how well the Zepp sensor
communicated with my iPhone. It worked every time. I then noticed that the impact locations weren't showing up, and some of the
on-screen buttons weren't working correctly. I received notification that there was a firmware update, which went perfectly, and
afterwards somehow all my data started appearing in the app, and the buttons worked as expected. I'd love to put this on a
Babolat Play to compare the data, but not having a Babolat Play at my disposal any longer, I can say that the Zepp sensor is
impressive. First, I like the fact that it allows you to use any racquet. My racquets are a lot heavier (and with a lot higher swing
weight) than a Pure Drive, so even if the price was comparable, the Zepp is the better unit for my needs. Second, I like that there's
one button instead of the two on the Babolat Play. You turn it on, you turn it off, you wake it up -- pretty simple. One button is
plenty. Third, I like the status light array. The lights march one way when turning on, the other way when turning off, and there
are other sequences for other modes. Very nice. The app displays data clearly, and it's easy to get to the screen/page you're
seeking. A couple things the Zepp Sensor doesn't have that the Babolat Play does: 1) the "social" connection with out Zepp sensor
users, 2) the ability to connect using your computer/browser via USB, and 3) the ability to download your data. None of these are a
big deal for me, however. I can see how it might be nice to share data with others (such as coaches), but the Zepp sensor
downloads to my iPhone without drama so I don't feel the need to have the USB data connection as a backup. The only thing I've
found that I don't like is the "pro" holder that sticks to the butt cap. It looks impressive, but the Zepp sensor flies out on impact
about every ten shots (for me, at least), so I've had to resort to taping the sensor into the pro mount to retain it during play.
If this is the first generation of this technology, I can't wait to see what the future holds.
Also, the Zepp sensor has one feature not found in the Babolat Play: The serve practice mode. Normally, you use it in training
mode, but you can switch to serve mode and hit a bunch of serves. The app will then show you a 3D representation of your service
motion. Who needs a video camera and analysis software when you have the data straight from the racquet?