I was just reminded of how useful this was for me, since i was too lazy to setup fan curves in the cli with pwmconfig. This took me 10 minutes of tinkering and my temps went down a lot under load on my gpu and the machine is a lot more silent when idling.
Since there is no screenshot in the repo i thought i'd drop this here. You don't need to install any GUI app since the daemon starts a webserver on localhost:11987 which looks like this: