+1 for Joplin (https://joplinapp.org/) with Nextcloud / WebDAV for sync. I use the web clipper all the time.

New messages (under an hour I think) are highlighted yellow.

self-promotion caveat: I’m building my sudoku game to be offline and fully accessible: https://play.google.com/store/apps/details?id=digital.cyberpuffin.sudoku

The only thing that might constitute an “ad” is a button on the main menu that leads to a promotion page for my print-on-demand book.