The only information that seems to be available in this app is for the US only -please state this in the description - had I known that, I would not have purchased it. Otherwise, the interface is reasonably well done, hence the one star...it just does not meet the needs of a Canadian boater! Apple, where is your product testing at? You should have picked up on the fact that this app was solely US based! It should not be made available in the Canadian App Store!