As for the weather flow works really good the dope I got off it was almost exact to what I had except for a click or too (moa) depending on the weather.just wish the GEO BALLISTIC APP had the CLOCK method for wind instead of degrees/and would be nice to have some reticles added to it aso/and also would be nice when you have it on the MOA setting that it gave you your dope to the nearest 1/4 INSTEAD of nearest 1/8. I see a lot of people using the STRELOK PRO app instead because it does have some more features I believe.NOT comparing this to the kestrel or anything else for the price of this and which app you go with your about $100.00 its good for a beginner good learning tool or a back up. anybody wants to add to this great.