Molgrips: aren’t you an IT person?? If so, you know the answer RTFM! 🙂
I’m a long term user of Back country Navigator and it has a fairly comprehensive feature set, including the ability to manage gpx files in multiple internal “databases”
Anyway, email me the actual gpx file and I’ll see whether it will load. Personally, I think it’s worth the price because of the depth of functionality but the Play Store reviews have similarly comments to yours because the user hasn’t got a f++king clue what they just downloaded nor took the time to read the help files….
But, yes, the UI is…err.. special