I will look into the application. There have been a number of these aids released over the years in the US but the degree of usage has often been light.
What parts of the country will you be visiting?
In Florida, there are collections of weather, wind and wave information for each section of the state such as the one for SE Florida at
http://fksa.org/showthread.php?t=6734
There is also the Howzawind posts for realtime beach reports
http://fksa.org/showthread.php?t=991&page=26