grumpy_o_g
Well-Known Member
Navionics policy is that it is a one time purchase. The security settings do not allow you to back it up. If you get a new phone you will probably not be able to reload it via google play, which does an excellent job with all other apps. Navionics disable this feature for their software.
In particular navionics do not want you to use the non hd version on tablets, falsely claiming incompatibility.
However this is not true and they work. It just takes a lot of hassle to get them to let you have the software you paid for. Result being disatisfaction.
I've had no problems backing up Navionics with both the Asus Backup app and with Titanium Backup - I've restored using both successfully. I've also successfully re-downloaded from Google Play but admitted only when it's already been downloaded on to another device. I think the problem comes when the release you bought has been discontinued and you are forced to buy a later product (that looks remarkably similar).