While it’s great that one can import KML/KMZ files into your iOS app, this is fairly impractical given the prevalence of GPX files for waypoint, route and track files, and the awkwardness of having to use a 3rd party tool to convert file formats to then import into your app. I’d assume it would be a very simple feature to implement.
Thank you for your post and feature request! I will ensure the request for GPX import compatibility is filed. If you would like I can add your contact information to the ticket, and if the feature is implemented in the future, we will notify you. If you’re interested in providing your contact information, please contact us via our Support Centre form at help.avenzamaps.com > Get Help with your details.
All the best,
Avenza Systems Inc.