Not worth paying for.
I thought this app would be helpful in providing locations and campground information. It has a few campgrounds on a map but no other information on them. There is an upgrade option in the app for what looks like the full version of this app, for $5.99. I was also hoping it would provide a map of BLM and USFS land, but it does not.
Cleteb about
USFS & BLM Campgrounds