Its a free app to download, and its chart prices seem compatible with what
Inavx offer through X-traverse.
Nobletec also have an
Ipad app, and as they seem to be the same company as
Maxsea, I dunno what the difference would be.
Edit: Just had another look and they only seem to offer
charts in the Northern Hemisphere that goes with the App, and not the Southern Hemisphere where I am. But one would assume it's just a matter of time.
Edit two: It seems
Maxsea support is in French, and Nobletec support for the app is in
English, other than that they are essentially the same app.