Orgzly Revived on Android, if you’re into emacs org mode. Can sync over git, webdav and dropbox. Probably syncthing too. Samba over Android file protocol with Material Design sadly doesn’t work.
On PC just edit the same org mode notes as in Orgzly, but with Emacs.
The generated password lenghts can be set in the UI at least. It’s worse when the password form accepts only SOME special symbols (looking at you bank)