Orgzly is one of the best apps for taking notes on Android, and it works good with the "Org-Mode" in the command line terminal.

Emacs, running in Org-Mode ( orgmode.org ), is the Linux compliment to Orgzly. When you open a ".org" file in Emacs, it will go into Org-Mode, and Emacs will behave in a way useful for taking notes.

Here's the Org-Mode tutorial website to help you see how it works:

orgmode.org/worg/org-tutorials/index.html

To get Orgzly / Org-Mode Syncing follow these steps. (See comments for more details)

1. Use your own self-hosted Nextcloud or use a Nextcloud service provider such as Murena Cloud (murena.io) formerly known as eCloud, and create a older for sync in your Nextcloud "Files" using a web browser ... Name this folder "OrgzlyNotes" for this example.

2. Install Orgzly Revived on Android, using F-Droid.org or Zapstore.dev, and sync to the Nextcloud / Murena "OrgzlyNotes" folder.

3. Install "Nextcloud Desktop" onto Linux, & Sync the Nextcloud / Murena "OrgzlyNotes" folder to a local "OrgzlyNotes" folder.

4. Install Emacs and create and edit .org files within the synced "OrgzlyNotes" local folder on your omputer. The "Nextcloud Desktop" software will auto-sync any changes to the folder.

A bunch of Org-Mode Tutorials can be found here:

orgmode.org