It works great! When I was on paternity leave and went out for walks with the baby in the stroller every day, it was a bit boring to just walk the same route each time. I downloaded the Fog of world app and set my self the goal of walking every meter of every street in my part of town before the end of my leave. That made it much more fun, buuuuut I haven't used it after that...
This is literally the whole idea of Nerdbrewing
"...Since sharing is caring, Nerdbrewing brought open source from the software world into the world of brewing and the recipes are free for any homebrewer to try out!"