Instruction: Analyze a question and its supporting document. Predicting answerability based on the information provided in the document. Output yes if the document contains relevant information to answer the question, otherwise output no.

Input:
Question: does it work with us lefties?
Document: Good idea, but needs work. Way too complicated. So much so that even the on-line tech couldn't rectify the problems.Gadgets like this are toys and should be very user friendly.
Addictive; insightful; ready resource for shots with each club; allows for some self instruction; work with a bona Fide pro and allow the pro to wear the glove with device to compare your numbers to theirs, particularly hand plane.
Unfortunately it&#8217;s not clear from the App (until you&#8217;ve used it a while) that the sensor is off and it took a while to figure out why things weren&#8217;t working. After finally turning the sensor on I again struggled to make it work until I figured out you have to hit the yellow icon to calibrate it first (by standing still at address for three seconds).
I found this to be an extremely difficult app to navigate and use. I do have an Android, but I imagine even on an Apple it must be extremely difficult to use. The concept is great and I really, really need this type of app to work on my golf swing, but unfortunately this isn't doing it all for me. Too complicated to enjoy, too complicated to invest my time into.
It clearly showed that I needed to address my "over the top" swing. The hip rotation is interesting, but it didn't always work for some reason. Note that I did all of this in my backyard with a practice ball. I took the Zepp to the driving range and used actual balls. I found my swing plane was 92% or better, so the "over the top" issue isn't as apparent when I am using actual balls for some reason.The swing speeds are apparently very optimistic.
Awesome device, Zepp golf is great for players of all skill levels. As a weekend golfer, finding time to hit the practice range can be challenging with work and family commitments. Zepp golf let's me work on my swing from home, indoors, shletered from the weather, and at my convenience. The real time feedback gives you instant stats on swing speed, tempo, and swing plane. Or just look at the overall swing score.
I hit dozens of balls, and my the results proved what I already knew. My swing needs work. Using the trainer though, I found I could slightly correct some of the things I was doing wrong. The most helpful thing was that after using the trainer for awhile and reviewing my results, I had a more consistent swing. I may not be swinging perfectly, but I got a lot better in using the same swing shot after shot.
A more clear icon in the app that says "I want to take a new swing" would be appreciated. What I like here though is that the calculations are apparently done on the device itself, not via a cloud server somewhere. This is appreciated, especially in settings where your phone/tablet may not have service.Zepp also has apps for tennis and baseball. The same sensor will work for those apps as well. As the apps themselves are free this represents some serious added value to the device.
Took it out for the first time & spent about two hours on the range. The sensor would disconnect regularly, app would say to tap the sensor icon twice to reconnect which didn't work. As far as the swing components, they didn't correspond to good shots. My best shots gave some of the worst scores. The pro came out & hit two 7 iron shots & I mean majestic towering straight balls. Gave him a score of 82.
A secondary screen lets you know club speed, etc, and compares your stats to perfomance goals. I can't overstate how well these features work. I did for-money swings as well as intentionally screwy swings and the device/app caught them all. The sensor device didn't bother me at all on my glove and after a time I didn't even know it was there. Battery life is great - I played with it for two hours and it was still going strong at the end of my session.
Answer: no