Does matter for what system you use Ozi, you will always need calibrated maps.
And their statement on website is not entirely true as you don't need the maps calibrated by the PC version - all tat counts is that they are calibrated!
If you use Mobac for example, or SAS planet the resulting maps are already calibrated and work fine.
The reason behind is that they want you to buy two products.
But if you only need the navigation on a portable device and have calibrated maps you will never really need the PC version.
Same policy for their mapping tools:
In the old days the format was mainly free and only commercial maps had a weak protection.
Now even maps you create from scanned images will result in maps that can only be used by OZI but no other compatible program - given you use the current tools.
IMHO this is the wrong way to go.
Ozi always had a huge amount of fans and was the first choice for most people sharing maps in regions where you have no other option than to make your own maps.
Now you have to find the old tools if you want to use your own maps on other systems as all new OZI formats are encrypted by default.
Offering the current mapping tools with the option to disable the ecryption would be a start, but I doubt they will go that route