It's not really a cloud service, maybe some of the add on features are but the major feature is the tunnel. I signed up for the trial and it didn't really give me anything I actually needed. The tunnel makes things simpler but I already had tailscale on another box so what's the point? Plus, I so rarely ever need to access my HA dashboard. I don't really want to pickup my phone to turn a light on. The whole point of HA is automation, not bypassing a vendor's app. Once things are operating how I want, I don't need to fiddle with it so why do I need to pay money to fiddle with it remotely?