Mil-Dot Rangefinder 4+

Works great, does all the math for you to range a target properly. It's not a magic wand, so you have to know how to use the mil-dot sight to begin with.
I only wish it would allow you to change the formula to accommodate the actual max magnification of your specific scope. My scope came with its own cheat sheet. And the formula they use has 900 as opposed to 1000 as part of it' equation.
So when I do the math on a calculator vs this app, for this particular scope, the range is off. But that's no fault of the app.
Since I'm new to using mil-dot, I'm assuming that the cheat sheet provided by the scope manufacturer has a different value in its formula due to the fact that is only 9X max magnified. And that the app is assuming a higher magnification.
But I could be wrong.

Good app. For those who don't know how to use it, read up on ranging a target. It basically does all the math for you as far as the mil relation formula. You still have to know the size of the target, be able to read how many mils/moa the target is in your reticle and match it with the app reticle. You can do either mil radian or minute of angle. Which ever one your comfortable using. Does the math for you to get your distance to target. So if you know the basics of ranging a target with your reticle then this is a good app. If you don't know the basic concept of ranging a target with your reticle then read up on it or stick with a laser range finder.

The best app so far when it comes to ranging with a specific load. Very quick and easy to use and the iOS interface is perfect. Job well done!