I have the free version, how can I get the paid version features?

Subscribe to the Premium option for 1 month or 1 year.
Open the drawer menu and press the Upgrade button to do so.
Note that subscriptions are renewed automatically.
If you want to have a lifetime licence, you have 2 equivalent options:
- Purchase the paid version on the Play store:
  Open the Google Play Store application by following this link :
  https://play.google.com/store/apps/details?id=com.sailgrib_wr.paid
- Buy the lifetime Premium option in the Free version.
  Once you have purchased the lifetime Premium option, you are all set.
  Do not try to install the paid version of the app.
  If you do you will be prompted to pay again.