Works on 20 30 yard pins.
I purchased this app about a year ago. It was accurate out to 30 but the 40, 50, and 60 yard pins were off. I could never figure out why. I have since discovered the 2 inch ruler calibration tool on the multi pin page I set the ruler against a real ruler and performed the calibration.....now every pin is dead on with my sight. You must use the ruler calibration to get the app to be spot on.
Archer1911 about
VelocitipUNO, v1.4.0