- The widget, groups, runways and NOTAM Add-Ons for Avia Weather as well as the license for Avia Maps are one-time purchases and valid forever.
- The sync feature (available in both apps) as well as global weather forecasts in Avia Maps are subscription based.
You may choose to do a recurring donation via Avia Weather to support the development. But this is optional and purely a donation, i.e. it earns you the overwhelming gratitude of the developer... no extra features.