Not functional
As others have noted, you can’t do anything without paying for the subscription. You can’t even search for trails that you know the name of! Every action on the app essentially leads to a pop-up that says “This is a pro feature for subscribers.” All the basic features other mapping apps have are being held hostage. It’s also noticeable that the app developers don’t even bother responding to the reviews that note how useless the app is without paying a ransom to Outside. You’d be better off using Strava or something crowdsourced - since Trailforks is largely relying on local user reports anyway and their trail conditions are not accurate because they don’t know anything about the trails they claim to be mapping.