Using it now. It seems like I finally found something that works. Having the same agents accessible on the laptop in a large TUI and quickly viewable from my phone has been useful.
Tailscale integration works well too. The mobile notification setup was a little clunky and the instructions were confusing, until I found the directory with the shell scripts. It should probably expose a herdr action to generate the keys and include that in the documentation.
One thing though: the subagent lines should be clickable like they are in Termux but your actions box absorbs the click and focuses the GUI input line.