1 Hour Demo or Full Version with License
End User License Agreement
You will find HDD Fan Control in your downloads folder.
It's both the demo and the full version (with license):
You can try it out for 1 hour after installation
then you must purchase a license to unlock the full version.
Instructions and Help for HDD Fan Control can be found in Support.
Reduce Fan Noise and Protect your Drive.
With the imminent release of OS X El Capitan we are pleased to let everyone know that the current version of HDD Fan Control is fully compatible and ready to go.