I really like Alexandria on desktop and there’s android support on the roadmap on GitHub.

I’m not the guy you asked but I do the same thing. In the tailscale dashboard you can set up a default DNS for every device that is connected to your tailnet. They support nextdns and a couple other things. I have mine pointed to my personal adgaurd home server that is within my tailnet and it works great. I used nextdns for a while but didn’t want to pay for it. It also worked great with tailscale.

This looks really promising for me. Is there any chance of opds support? I couldn’t find anything on the GitHub page.

Last commit looks like 4 months ago. Is this being actively worked on?

I was very close to closing on a house in rural midwest but I checked isp’s and every one available had caps so I just stayed away.