Frustrating interface
This app is great when its finally running, but every time you start it it sits and chugs for as much as a couple minutes (a major drawback if you need it in a hurry) and even after the main screen comes up you have to reload your map. Twice now when I updated I lost my for-fee fugawi vector maps. Theyre supposed to stay on your device once downloaded even after your subscription lapses, but mine were gone and I had to pay to download. BoatUS gives you the same maps for the $10 price of the app.
P1ngP0ng about
iNavX: Marine Navigation, v5.0