“This is my first experience with a laser rangefinder. So, I'm not a skilled judge of how it functions. But the rangefinder seems to work exactly as described. At this point, it's providing more information than I know how to recognize and use effectively. But with repeated practice, I'm getting accustomed to how to read the rangefinder display and app interface.
Yes, there's an Sig BDX app for your phone device. I downloaded mine from Apple's App Store. Download and installation was easy. The app/phone system links to the rangefinder by Bluetooth. There's no hesitancy in making the link. All you need to do is have your phone turned on and with you; then, when you press the button on the rangefinder to activate it, there's a linkup generated between phone and rangefinder. The app can process a lot of information, it seems. As I understand it, you can enter in windspeed and temperature — looks like manual input, unless there's a way to link it with a weather app (maybe; I haven't looked into it that far). But range and incline / decline is transmitted by the rangefinder. Also, you can input custom information about the type of round you're using — caliber, weight, speed, ballistic coefficient. Or you can use one of the numerous bullet profiles already programmed into the app. None of the rounds I use was in the database, to my surprise, because most of what I use is common .223 or 5.56 NATO. Then again, there are so many kinds of rounds, it would take up a lot of memory to track them all. Custom input was easy. Finding the BC for some of my rounds was not, but I eventually got them all. The upshot is, for any given rangefinder sighting, the app appears to calculate things like bullet speed at a given range and other key information pertinent to aiming precisely. I'm still figuring out how to read all this. But I'm as inexperienced in the arts of shooting as I am with using this rangefinder. I suspect that for a seasoned marksman or markswoman, the information provided by the app will be really useful in making a good shot with no wasted time or ammo. As far as I can tell, this Sig rangefinder is a dandy, well made product that offers good value for the money. I'd buy it again if this one got lost or broken beyond repair.”
