we are currently packaging the new Alby Hub for Start9 and Umbrel.
It is still WIP. but you can test start9 here:
https://nightly.link/horologger/albyhub-startos/actions/runs/9935574869/albyhub.s9pk.zip (download and unzip the .s9pk file to then sideloading it under the StartOS > System > Sideload a Service section.
repo: https://github.com/horologger/albyhub-startos
this is the umbrel community app store: https://github.com/getAlby/umbrel-community-app-store/tree/master
the Alby Hub is the new app
but I haven't tried it myself on those systems, yet.