[jlgtx]

That's a bug I've seen when selecting other file types as well - it's something wrong in Apple's file picker unfortunately, so it's not something I can fix on my end. 

If I open the Files app, long-press on a .cho file (local, iCloud, Google Drive, location doesn't matter), and pick "Share..." I should be able to find MobileSheets someplace in there. But it doesn't appear anywhere. I scroll all the way across the listed apps (2nd row of horizontal icons, just below the horizontal row of recent message contacts), and then click "More.." and MobileSheets doesn't appear in that list either. OnSong, SongSheet Pro, even a bunch of apps that might open .cho as text files but certainly not as ChordPro, all appear in that list.

In the "Share" window, below the horizontal lists, is a vertical column of buttons, "Copy" being the topmost. In that column, I see an "Add to OnSong" button (I think the term for these buttons is either "app actions" or shortcuts). An "Add to MobileSheets" button would be sweet.

I think there's someplace that we're missing the .cho file type. Not sure where. Maybe start here:
https://developer.apple.com/documentatio...r_your_app

I'll keep looking around too.