MacFans

Fan control for Apple Silicon Macs. It lives in the menu bar and uses almost nothing.

macOS 14 or later · Apple Silicon

0.0%CPU with the menu closed

~15 MBmemory

0background work while idle

What it does

Shows each fan's live speed, plus its minimum and maximum, from the menu bar.
Reads every temperature sensor. CPU and GPU show their core average, with the hottest core beside it.
Pins a fan to 25%, 50%, 75% or Max, or to any speed you pick with the slider.
Profiles make the fan follow a temperature curve, CPU or GPU load, or a daily schedule. A timer runs any speed or profile for a while, then goes back.
Double-click the menu bar icon for the full window: live gauges, every sensor, and a curve editor you drag.
Automatic hands the fan back to macOS. Quitting MacFans does the same, so a fan is never left pinned.
Updates itself. Each update is checked against the publisher's signature before it is installed.

Open the downloaded DMG and drag MacFans into Applications.
Open MacFans from Applications. It is signed and notarised by Apple, so it opens like any other app.
A fan icon appears in the menu bar. The first time you change a fan's speed, MacFans asks for your admin password once, to install the small helper that writes fan speeds.

A Mac with Apple silicon and at least one fan. The fanless MacBook Air has nothing to control.
macOS 14 Sonoma or later.