Not bad but lacks key features
I also use Navionics and honestly Navionics gives you far more bang for your buck.
On the good side, I really like the user interface. Its clean and easy to follow for the most part. I also like the ActiveCaptain integration - fantastic. In fact its the one reason I bought this app in the first place.
Now for the bad:
I would really like to be able to export my tracks and routes to some external app like Google maps or whatever using GPX or KML. Seems to me that this is a no-brainer but all they give you is a cheesy (inaccurate) image of your route or track that you can e-mail to yourself.
It would also be nice to be able to enter waypoints with Lat/Lon directly instead of the cumbersome indirect method you are stuck with. This might not be such a drawback if you could import/export waypoints, routes and tracks to/from other applications...
Not good enough. Not being able to exchange data with other apps is just basic simple stupid functionality and about the LEAST I would expect a navigation app to do.
HeadSpaceITConsulting about
Garmin BlueChart® Mobile, v1.4.1