The day I need a computer app to make me a better hunter is the day I hang up my guns. I don't use an app of any sort. You want to be a better hunter spend more time in the woods. Learn the habits of your quarry. Learn to track. Learn to read sign. Learn to move quietly in the woods. Learn to spot game before it spots you. Learn to shoot well and learn how to take care of the animal after it is down. You can't learn any of that from an app. You have to go live it.