Re: Cellphone Nav?
I have and use a couple of apps on my iphone/ipad. A couple, the Navionics, the MotionX GPS , Windfinder, WindAlert. All really usefull and seem to be pretty accurate. Not familiar with the one you are looking at and the Navionics is $50? But they are good apps and have been accurate for me in the SF Bay and surrounding area.
I don't have a GPS on my boat other than the ipad but have been looking to buy one as a back up. I've been looking at the Garmin Montana but at about $500, I'd rather find an older used one. Not that I'm stingy with my money but the Iphone's nav apps are so good, it's hard to justify.