I have every iPhone and iPad navigation
app available for boating
. I personally think that at $20, it's a good idea to have both Navionics and Navimatics. They use different chart databases and it's often nice to see the difference. It's not like the apps cost hundreds of dollars.
One thing you didn't mention about the Navimatics app is that it integrates NDBC weather
data live from the various data buoys. If you do coastal cruising, it's really nice to have it all integrated together.
One thing you didn't mention about the Navionics app is that it includes links with Facebook and provides some amount of social networking support. I've tried it and can live without it but there are some people who must continually tell the world about their lives through Facebook and Navionics can help with that.
I detest the iNavX
app. At $50, it is one of the most frustrating pieces of software
I have ever used for navigation
. Try to pan around the ICW
going from chart to chart and you'll find yourself thinking about pitching the iPhone overboard
. It has a poor user-interface and costs more than any other app. I also don't like that to get at any additional functionality with iNavX (route sharing, weather, etc) you have to pay a subscription fee. Additionally, iNavX has no tide support. You have to pay an additional $10 to have it launch AyeTides. That's ridiculous. You can get free tide apps (ShralpTide) - why pay extra for it? It's included and all integrated in Navionics and Navimatics.
If you really like raster charts, Memory-Map's app has a better user-interface and has gotten better reviews than iNavX in independent reviews (Practical Sailor).
Oh yeah, ActiveCaptain integration in Navimatics is really well done. I'm totally biased there. I've put about 500 nm on my iPhone and iPad
with it and really like it. I honestly use it as my "go to" device underway even above my own web site that I created and wrote the code for. It's quite nice to have all of the data offline. Of course, in my mind, that puts it well above Navionics if you have to have just one.
Note too that Navimatics allows you to run their single
app on both an iPhone and iPad at the same time - no extra cost. Navionics charges for their iPad app again even if you already have the iPhone one.