Navigon Mobile Navigator: is there a crossupgrade from iOS to Android?

Hi folks

Long ago I had the iPhone 3GS 32GB but got rid of that soon. After a few years in WebOS heaven I changed to Android now.

On the iPhone I had bought Navigon Mobile Navigator. I would like to crossupgrade that to Android, but can't find anything on that. The german language Navigon page shows no mail Adress to contact them but only costly telephone numbers (very disturbing).

I just wanted to check with you Android wizards here in the forum, if anyone knows of anything. If not, it's ok as wenn, for I can choose another product if I like :)

tia for any hints
Buddy

ok, thx anyway. Seems that there is no cross upgrade and therefore no reason for me to use Navigon again.
cya