This is a fantastic app, especially for the price. Great features and options, map clarity is great, and the ability to download specific regions to your iPhone for offline use by highlighting any specific area is fantastic - allowing for use out on the water even where there is no cellular service or WiFi.
I use this for Georgian Bay. I also use iNavX with the official CHS Charts and find this app to be more useful for iPhone use. And at a fraction of the cost.
Great work.
DueNorth-GBay-89 about Boating US&Canada, v7.1.2