How can I open a GPX file in my app with iOS 26 “Files” app?

Hi,

I’m trying to open a GPX file (route.gpx) from the Files app on my iPhone using my app (e.g., Aqua Map).

Since the latest iOS update (iOS 26), when I long-press the file and tap “Open with…”, my app does not appear in the list anymore.

I’ve checked that my app has the correct permissions for Files and Folders. I’m wondering:

Is this a user-side issue (Settings on iPhone)?

Or does it require developer-side changes in the app (Info.plist / UTI declarations) to make .gpx files appear in “Open with…” or “Share” menus?

What is the proper way to make my app appear as an option to open GPX files in Files.app on iOS 26?

Thanks in advance!