It's a great and simple help for improving your swing tempo and swing path. It's very easy to connect via bluetooth and there is no attaching of a device to your clubs everytime you switch them. Worked perefectly from the first moment. New functions like measuring hip rotation when your iphone is in your back pocket is also a really cool improvement. Would like to see storage of your swing data in the cloud. Absolutely worth the money and I would buy it again.
Love the ability to see my swing planes and see how far apart my backswing and downswing are. While I hope they add more data to the swing analysis, just seeing my swing planes has been super helpful. Club head speed is also quite helpful as it's something I've been working on.