Arken Ballistics Calculator

I downloaded the Arken BC on my phone and have it all setup for two rifles. The question that I have pertains to the RETICLE button. This screen gets confusing on how it works, I thought I figured it out easily enough, but when I started verifying numbers, it fell apart. So here is a scenario: In the main screen, you type in a yardage (I used 300) and hit calculate. That tells me my drop is .9 mil. So fundamentally speaking, I either dial .9mil up or I hold .9. If I go to the reticle screen, and leave the virtual turret at the top set at 0, I am assuming this means IF I make no actual turret adjustment, the reticle tells me where to holdover. It is at .9. So all good so far. Here is where it falls apart or I am not understanding how it works: If I dial the virtual (APP) turret up to .9, you would think that the target would be in the crosshairs, telling me to shoot dead center in my scope. But it does not. I have to dial the virtual turret to about 3.1 before the target and the crosshairs line up. The red number being displayed in the crosshairs (when the virtual turret is set to 3.1) is 299, but clearly it does not take 3.1mil adjustment to hit a 300 yard target. What am I doing wrong, or is the virtual turret messed up?

Thanks for any help.

Johnny