I have the avionics app on my iPad as well as charts and tides. Both are awesome. Charts and tides gives you access to the active captain
database. In my opinion , no one going to someplace unfamiliar , or trying to plan a route
somewhere they have never been , should be without the active captain
data base. It's like having input from dozens of people , that have been there. I had some questions about charts and tides , and Jeff from active captain spent the time to answer these , and to inquire with the company who offers the app , to resolve my mis understandings. And this isn't even his app. Thanks again Jeff.
I like the navnionics app. My only grumble would be , that there is no simple way to export a route
simply. I use the share route option , this way you can email
yourself a .kmz file (google earth file), and then use gpsbabel , to convert it to something you can load in your chart plotter. Kind of a roundabout pain in the rear , but it works.
The gps in the iPad works great , and both of these apps allow you to download and install the maps locally on your iPad. If charts and tides would add the ability to do route planning , I wouldn't need anything else.
I am patiently waiting (or impatiently waiting) to see what new product active captain is going to release directly , as their own solution for an iPad app.