Re: What Boating iPad or iPhone apps do you use?
I have iNavX and Marine Charts on my iPhone.
I like Marine Charts much better than iNavX. Kind of regret spending the $50 on iNavX, though you can buy more charts for it through a 3rd party, something like eXtreme.
I bought a Garmin to use with the Garmin Blue Chart v2 Vision chip, especially for the "auto route" type feature through tough, rocky areas on Lake Huron. Have my iPhone, going to upgrade to an iPad as a supplement for the Garnin.
Michael