Monitor and control your RPi.
GPU and CPU temperature, load, scaling, memory usage, disk usage, users, ethernet and wifi bandwidth, GPIO, and more :)
Shutdown or reboot the system, update the OS, and control the outputs of the GPIO.
Stop, start and restart containers
From an advanced flow you can run any command you like (I hope you know what you are doing ;))
In your Raspberry Pi you need to have SSH access enabled. Per default the user 'pi' is used for Homey to login, but you could setup a different user if you want. In Homey enter the IP address of the Rpi, and supply the username and password.
The app is designed to work with Raspberry Pi hardware and Raspberry OS. Other hardware and Linux distributions might partly work. Just try and find out!