The NEW version of GAIA GPS for iOS has been released!
http://blog.gaiagps.com/next-generation-gaia-gps-now-national-geographic/
Please read this blog post because there is LOTS of information in it. I will try to answer questions as I can.
Extended Trials for Existing Users
Already have the old Gaia GPS? You get an extended free trial with the new app – up to two years based on purchase date. The more recently you bought Gaia GPS, the longer the free usage period, on a sliding scale. You can also continue to use the old app.
The biggest change regarding cost of the app:
The app is free to download and try for 7 days. It is then $9.99 a year or $29.99 yr for the Pro level. So the pro subscription got cheaper and after 2 years you would be even money on the cost of the old version.
Additionally, existing users with “GaiaPro” subscriptions from the old app get access to the new app at no additional cost, including National Geographic and all other Premium maps.
Existing Gaia GPS users can read an FAQ here:
https://help.gaiagps.com/hc/en-us/articles/115007658388-FAQ-New-iOS-App-vs-Old-iOS-App