If you're not using your smartphone to navigate, you're really missing out! Paper maps are always a great thing to have on you as a backup, but mobile mapping applications are where it's at. So much information can be carried with you on your mobile device that you'll be glad you paid whatever it costs to access the information.
Hunters and hikers alike can benefit from these mobile applications!
In my experience, I've found that Gaia GPS is more focused on hiking trails while onX is focused on the hunter. While both can benefit both, I'd suggest using the application that you do the most of.