If it 100% matched how the trigger pull feels when firing the pistol normally or dry-fire without dry-fire magazine then I could see the point. For me I don't see any advantage over traditional dry-fire(without any devices to assist).
I have one I am selling for 60 bucks right now. They are nice but I don’t use it much. The trigger reset is the nicest thing about it.
I've been looking at those, are they reliable? I've been reading reviews that say they have a so-so hit registration rate, and also that they stop registering hits at all after a couple of months.
No experience with that system personally but FYI I posted the results of my research on some dryfire apps etc in the thread linked below. Might save u some time if u are researching other systems out there. Feel free to ignore if it's a bad fit for what ur looking for. Also it's not comprehensive of every system out there, only the ones I found and some of the more expensive ones I wasn't interested in. Thx!