Ill 2nd that.
Get a mapping/ GPS tracking program
GAIA, Backcountry navigator, Backpacker GPS trails. Among others (I use GAIA)
I you do long range shooting a shooting app. It is even helpful if you only shoot 300 yds to compensate for wind and angle.
Bullet flight, Strelok, Shooter are a few.
I like using the camera flash as a flashlight.
I also have an app called score my rack.
Have fun and good luck this season.