I was basically thinking of a simple browser app for Android that automatically makes its requests over a Wireguard tunnel.
I don't publicly expose a lot of my self hosted services, most are only available over a Wireguard VPN. I don't think my family could work that out, and I also don't usually keep it enabled all the time on my phone.
It doesn't have to be a fully featured browser, I'm fine for it to be the built in Android WebView or something, and just have a configurable menu of pages that can be easily visited.
I have some Android app experience from Uni, so I could maybe help out somewhat, but I feel I'm going to be in way over my head to do this alone. I'm happy to donate a little anyway.
Probably because there's also permission to use the X11 socket.