You might want to look into some of the newer range finders with ballistics built in. I have one of the Sig models that comes with the full Applied Ballistics software installed. It has sensors to measure and calculate environmental data into your drop data (pressure, humidity, temperature).
Once everything is configured, just range your target and in the viewfinder, you will see your MIL/MOA adjustments and any windage corrections. No more range cards or messing with your cell phone although I would still print the cards as backup
. Just range. Dial. Shoot
If you REALLY want to go all out and ensure everything is measured as accurately as possible, get a kestrel and pair it up with the range finder.