Updraft for macOS

Why are your
fans loud?

One plain sentence says why — or, on a MacBook Air with no fans at all, why it’s hot. The evidence sits underneath.

The answer first

One sentence,
then the proof.

Other monitors show numbers and leave the diagnosis to you. Updraft leads with it: which process, how hard, for how long.

Every MacBook

No fans?
Same answer.

A MacBook Air has no fans, so it never gets louder. It gets hotter, then slower. Updraft sees there’s nothing to listen to and reads the chip instead: its temperature leads, and the sentence names what’s heating it.

Nothing to set up: it notices when it opens, and adjusts itself.

The right moment

Fans answer late.
Updraft looks back.

Fans lag the work that heated the Mac. Updraft blames the 75 seconds that made the heat, not the moment you happened to look.

Timeline last 2½ minutes
the 75 seconds that heated it 2½ min ago now

Every process

It sees what
isn’t yours.

The usual culprits belong to macOS, where an ordinary app can’t measure them. Updraft can, with no admin password.

What’s using the machine average over the last 20s

Your fans are roaring because of Spotlight indexing.

It finishes on its own — usually minutes, occasionally an hour after a major update.

  • Spotlight indexingmacOS118%
  • WindowServermacOS41%
  • Safari ×9app23%
  • kernel_taskkernel12%

History

By the time
you look, it’s over.

Updraft keeps the last half hour. Scrub back through the last fifteen minutes and see what was running at any moment.

Fan load last 15 minutes

showing 9m ago7,410 rpmXcode 184%

Underneath

The rest of the story,
when you want it.

Fans

Each between its own floor and ceiling. No fans? The chip’s heat takes their place.

Conditions

Each against a realistic ceiling.

Cores

Load and real clock speed, per core.

Timeline

Fifteen minutes. Hover to rewind.

Die temperature

Every sensor on the die, sorted.

Menu bar

A fan that spins up with yours — or, without fans, the chip’s temperature.

On your Mac

What it measures
stays here.

  • No account. The analysis runs on your Mac.
  • One kind of request: checking for updates, daily or when you ask. Switch it off in Settings.
  • No admin password. On a locked-down work Mac, it says what it can’t see.

Install

Get Updraft.

Version 1.2 · 2.9M · 21 Sep 2026

Apple silicon · macOS 14 or later

For every Apple silicon Mac — with fans, or without them like the MacBook Air.

  1. Drag Updraft into Applications and open it.
  2. It lives in its window and the menu bar.
  3. New version? An Update button appears beside the gear.

Signed and notarized by Apple. Updates are signed by Farpak and checked before they install.