First off, I love this. This is a fantastic idea. The GPS course locater is long overdue. People complaining the money...IT'S FIVE DOLLARS.
Now that I've said that....
I really support this app being free. I don't see many recreational disc golfers buying this app and I certianly don't see those who really don't know what disc golf is buying the app.
This is a unique opportunity to introduce new players to the sport and turn recreation players into more competitive players. 4.99 will turn away many people from the app. Those of us like me who know the sport and play it, it's an instant buy. But of course, I'm very knowledgeable of the sport.
I think the free app will provide people with access to the course directory and basic scoring. Most new players don't need to know the numbers of OBs, putts, etc, or need detailed descriptions of holes.