I bought one of these about a week ago. They are 20% off with Holiday code- AMERICA
I like it so far for dry fire practice, it gives a score history.
I like the shot placement photos. Hopefully through the winter I can improve my shot groupings even if the score isn't centered on the 10 ring.
I have not had any false hits with the latest version of the App.
It may miss a shot at times, it seems to be very good at detecting shots with plenty of light on the target.
I do get an occasional laser streak.
I haven't adjusted my sights for the laser cartridge point of impact, so it seems to shoot a little to the right.
It may vary from insertion to insertion of the cartridge, I've only inserted it once so far.
I am using a 1911 with a hammer, it might not be as convenient for a striker fired pistol where you would have to rack the slide to reset the striker.
(Revolvers you might want to get a laser cart. for each cylinder!)