Premium User Status
PD Maps is a completely free application with no ads inside. Premium user status is available for In App Purchase. Premium users get express support & assistance and are provided with offline maps mode. These funds make future updates possible.
PLEASE NOTE: premium user status is purchased only when you entered your iTunes password. If you had accidentally tapped on '$' icon but didn't enter your login and password you won't be charged anything.
Satus of Premium User stays forever. If you have to restore it on a new device, go through the process of purchase once again and iTunes will inform you that you have bought it before and suggest you to load it for free.