WTF is heating my Mac?Meet your Mac’s plus-one Find the apps eating your CPU. Spot the server you forgot. Get a lovingly disrespectful second opinion.
Coming soon · macOS 26+ · Apple Silicon
No account. No subscription. No cloud brain.
Figma has the highest observed CPU usage.
A small app for that very specific moment:
“I have three things open. Why is my Mac like this?”
Your Mac is working overtime. Let’s find out WTF. See your apps and their helpers together. Figma ordered the all-you-can-process buffet. Find forgotten development servers. Review the processes, then stop only what you choose. Real measurements. Completely local. A little attitude. WTF Is Heating My Mac. $4.99 once at launch.
Regular apps are first-class citizens.
You don’t need to be a developer to need this.
Apps and their associated helpers appear together, under names you recognize. Sort by CPU or memory. Open the details when you want receipts.
See projects, worktrees, local agents and listening ports together. Observed connections get an explanation. Uncertain ones stay uncertain.
Quit an app normally so it can ask you to save. For a service, review the exact processes first. Force Quit is a separate, explicit choice.
There’s useful information. Then there’s useful information that makes you snort. Pick your personality. The measurements stay serious.
Dry wit. A little swearing. Absolutely no cloud LLM.
“One project.
Several servers.
Zero chill.”
Example: similar services in one worktree,
on different ports. They may be intentional.
See the biggest observed CPU contributors. We won’t pretend that proves which app generated the heat, or invent per-app GPU measurements.
Fan reactions use sustained, measured speeds on supported Macs. We don’t measure noise. Missing sensors mean “unavailable,” never zero.
No account, API key or cloud model. The app processes data locally. It doesn’t read your documents, chats or source code.
Small purchase.$4.99 once, at launch
All features. All three personalities.
Nothing else to subscribe to.
Not yet. The app is in local beta. The public download and checkout will open after release signing and compatibility checks are complete. The planned price is $4.99, one time. We aren’t taking payments or preorders.
Absolutely. Figma, Safari, Chrome, Slack and other running apps appear alongside development tools. The busiest measured app gets the top spot, regardless of what it does.
The app targets macOS 26 and later on Apple Silicon. Process monitoring works independently of fan access. RPM reading has been exercised on a MacBook Pro with M1 Pro; broader fan compatibility is still being verified. Some Macs have no fans; unsupported sensors show “unavailable.”
No. Every quit or stop starts with you. Ordinary apps receive a normal quit request so they can show a save dialog. Development services show the exact reviewed processes before you confirm. Force Quit needs separate confirmation.
Roasts use local, authored templates tied to observed data. There’s no cloud LLM or API key. The app keeps short local process attribution and action history, and a 15-minute CPU timeline. It doesn’t inspect document contents, browser tabs, chat messages or source code.
Pick Chill for a gentler personality, or Off for plain facts. Measurements and controls stay the same. The default experience is silent and respects Reduce Motion.