However, after futzing with a sample file for a while, I found that the exported LQM files are just zip files, and can be opened with most compression apps.
Thus, you can long-press on a note to share it with yourself (or others) via Gmail, but once you save the attachment, there’s no way to open it on your desktop or laptop. One downside, however, is that there’s no Quick Memo app for Windows. Come to find out, it handles my basic note-taking needs pretty well. It’s not as good as OneNote or Evernote, but since it can’t be uninstalled, I thought I’d give it a try rather than waste precious storage space on duplicate apps. Many LG phones come with Quick Memo, a pre-installed note taking app.