Does anyone use the 'Range Buddy' app for measuring groups ?

[thebeav]

I downloaded this app a couple of weeks ago. I think that my magnifying glass and vernier caliper are about as accurate as I can get, but I thought I would try this app just in case. I like to measure groups out to the thousandth of an inch, this app only seems to go out to the hundredth. So far, every group I've computed with the app comes out a bit larger than my physical measurement. Usually around 15 thousandths or so. I guess the app measures groups by the number of pixels in the group distance. It would seem to me that the higher the resolution of your Android device, the more accurate the measurement.
Just wondering what anyone else thought......

 

[STOMP442]

I use the ballistic x app and have been really happy with it. I use a Target that I make that has 1" grid lines on it so that I can calibrate it really close. Seems to work really well.

 

[thebeav]

Thanks for the information. 'Ballistic X' was my first choice but it wasn't compatible with a Kindle. At least, I think that's what prevented me from getting it. IIRC