CPU temperature and fan speed, always visible.
Not a Fan keeps the current CPU temperature in your menu bar and tells you when the chip is being thermally throttled. Works on both Intel and Apple Silicon, and gracefully handles fanless Macs.
CPU package temperature in the menu bar, updated continuously. The font is monospaced so the digits don't jitter.
Each fan's current RPM in the dropdown — useful when you want to know whether the system is actually moving air.
Native banner the moment the SMC reports CPU thermal throttling. Subscribe-based via go-pmset — no polling cost.
Reads SMC sensors via go-smc, which supports M1 / M2 / M3 / M4 alongside Intel.
MacBook Air, Mac mini base, Mac Studio show “No fans!” rather than a stuck zero.
Launches at login; updates from GitHub releases.
It’s a few hundred lines of Go on top of menuet — the same library you can use to build your own menu‑bar app. Read the source, or start your own.