Free National Weather Service site beats it hands down. – Great Lakes Boating Weather Review

Not sure what this app is for. Go to NWS.org, input a city near your boating location, and click in the water on any map, and if it’s available, NWS will give you the same info, and it’ll give it to you in portrait or landscape. The NWS options are much more complete, and buoy data is much better displayed.
Review by Getaway sailor in Cleveland on Great Lakes Boating Weather.