If you are not a very advanced Mac user, do not use this app and do not attempt to adjust fan speeds. Use this app entirely at your own risk, as it can damage your Mac. This app and others for advanced users have sufficient knowledge and experience to understand what they are doing and why they do it, and to avoid damaging their computers. Overusing a fan can also result in hardware failure. Failure to adequately cool a Mac can result in performance issues, crashes, and even permanent hardware damage.

Manually controlling the Mac fan speed is not without risk, so if you do not know what you are doing and how not to harm your computer, do not use this type of app. But keep in mind that the Mac will adjust the fans on their own, depending on the temperatures as needed, so it's usually not wise or intervened. The appropriate name Macs Fan Control application allows this. This can be useful for performance reasons, but also for some troubleshooting situations, or if you want to attempt some drastic intervention to manually cool the temperature of a hot Mac.

Advanced Mac users may want to occasionally manually control their Mac fan speed, while monitoring the active fan speed and keeping an eye on the various internal temperature gauges on the Mac.