I used mine at the range today, and overall it worked pretty well, I did notice it "counting" slide drops a couple of times. I need to go back through the app to delete those. I also noticed that the mounting screw was about to fall out when I finished my session. Make sure to check yours if you use it for live fire (was mounted on a PX4 in 40 FWIW)
Also, interesting that my scores were significantly lower, but I guess that's to be expected. Dry vs live is very different, and frankly I have a lot of work to do on both.
Make sure you tell the app that you’re doing live fire. It adjusts the sensitivity of the reading and might eliminate the slide drops.