Da Best!
I have used this app for more than a year exclusively. It has helped me successfully navigate the Pacific Ocean from SanFrancisco to Hawaii and almost every hawaiian island. It is the best alternative to chart plotters with real time GPS. For $14.99! I couldnt ask for a better navigation aid. I have the app on my iPhone and iPad for one flat rate. Without this app, I may have run aground or got lost many times. Well worth the cost.
bnsayers about
Boating US&Canada, v6.0.1