I probably don't understand but Shooter has BC editing. I put in all the details and it's on the money.
Printable View
The best. In my opinion. Not an app, but print out different density altitudes and keep them with you.
http://www.patagoniaballistics.com/index.html
Ballistic AE is the shit. It enables a dummy like me to hit my intended target if I do my part.
The app creator, Jonathan Zdziarski, is always updating it and incorporating great new features. It's worth every penny.
I use Field Firing Solutions and Shooter. I'm still playing with them but think the Field Firing Solution is a better program.