I've got a very funny problem on my Galaxy S3 running Navionics Boating (from 4.1.x on). The app seems to work, but I can't see any details when I zoom in on coastlines. However, I can download maps for a selected area. Anyone having the same issue with older smartphones (I'm running Cyanogenmod 11, that is KitKat)?
New info: I tried the regular 'test' version of 'Boating' from the app store. Even with this version I can't zoom into the map. Navionics claims it is supporting the S3. So I'm beginning to supect this being a problem of Cyanogenmod11/KitKat.