I like the idea and have been meaning to build / find something like this however this does a little too much and in not quite the way I want. But it's cool for those who need this exact implementation.
I don't get it. Why wouldn't you just make this a hosted service instead of a mobile app? Better, why wouldn't you just use Prometheus for this instead of some rando tool?
To have informations on my phone home, to easily, from anywhere check/monitor my servers and ssh on them.
I selfhost CheckMK, as I'm not a Grafana fan, these tools are fine to monitor and get alerts but don't have apps...