I use a folder with markdown notes & syncthing to sync them between my devices. I also run a cron job on my phone to regularly push them up to a private GitHub

I use a folder with markdown notes & syncthing to sync them between my devices. I also run a cron job on my phone to regularly push them up to a private GitHub repo for online access. Android - markor PC - vscode / typora Online - GitHub's editor & markdown viewer