I have tested the RypRadar against my Trackman 4 and I have not seen a more than a 2mph difference between the two. It seems to be right on with the Trackman most of the time. Great product and a great owner/ company backing it up!
Fantastic radar for the value. I compared it to the blue sport sensor radar and it was more accurate. I also love the audio. My kids and I love working on speed with the radar and Rypstick together.