The whole app runs around the users preferred surf spots. By having that information the app has a better chance of showing relevant content.
Displays detailed information about the surf conditions on a spot. The goSurf! button takes the user to their navigation app.
The grainy black and white photo effect, as well as the neutral creme, grey and dark grey intent to appeal to the nostalgia of film photography which is part of the graphic environment of the sport taken from (now vintage) surf movies. The monospaced PT Mono is another clue to this sentiment, being a reference to typewriters.