Although Ive only played regionally in Central Minnesota, every course Ive played has been available on this app. I dont know how often maps are updated, if ever, as one hole on my old home course had distances listed all short of the green. The distances were correctly placed on the closeup photo, but the back of green measurement is 15 yards short of the green. Otherwise, my measurements are within a yard or two of guys with lasers. Only issue is I use up my battery if I turn off the auto shut off for four hours, or Im constantly having to re-open the phone.