Heat Watch
Full · Mac · direct download
Which app is heating your Mac, and what to do about it. Chip temperature, per-app CPU, GPU and power, and one-click fixes.
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Heat Watch
Two Mac editions. Compare them side by side.
Heat Watch sits in the Mac menu bar and shows how hot and busy your Mac is. It comes in two editions. The full version can see inside other apps: it names the one keeping your Mac busy and offers to quit it. The Lite edition from the Mac App Store sees the whole Mac, and works within the App Store sandbox.
Choose your edition
Heat Watch Lite
Lite · Mac · Mac App Store
How hot and busy the whole Mac is, in plain language, with alerts when it stays busy, slows itself down to cool, or runs low on memory.
Details →What each edition shows
✓ included · — not in this edition
| Feature | Full |
Lite |
|---|---|---|
| Menu bar and Overview | ||
| Chip temperature in the menu bar and Overview | ✓ | — |
| CPU and GPU use in the menu bar, then network | ✓ | ✓ |
| Overview with live tiles | ✓ | ✓ |
| Desktop panel of live tiles | ✓ | ✓ |
| Alerts | ||
| Alert when the whole Mac stays busy, macOS slows it to cool, or memory runs low | ✓ | ✓ |
| Alert when the disk is almost full or the battery is low | ✓ | ✓ |
| Alert that names the one app keeping the CPU or GPU busy | ✓ | — |
| Quit the app, stop Gradle, or pause its alerts for an hour | ✓ | — |
| Apps and charts | ||
| Busiest apps by CPU and GPU, with a graph for each app | ✓ | — |
| Power per app in watts, and the apps using the most battery | ✓ | — |
| Plain-language reasons for named apps, such as Android Emulator, Spotlight or Gradle | ✓ | — |
| Temperature chart, 15 minutes to 24 hours | ✓ | — |
| Heat state chart: Normal, Warm, Hot or Critical, as macOS reports it | — | ✓ |
| CPU and GPU charts, 15 minutes to 24 hours | ✓ | ✓ |
| Per-core CPU, memory and disk details | ✓ | ✓ |
| Log of recent alerts, and CSV export | ✓ | ✓ |
| Getting it | ||
| Open at login | ✓ | ✓ |
| Where to get it | Direct download, notarized | Mac App Store |
| Updates | Built in (Sparkle) | App Store |
| Sandbox | Off | On: reads only system-wide figures |
Which one is right for you?
Choose the full edition if you want to know which app is behind the heat, and to act on it from Heat Watch. Choose Lite if you want to know how hot and busy the Mac is and get warned when it stays that way, from the App Store, with updates through the App Store.
Lite can't see other apps, so when it notices a busy Mac it points you to Activity Monitor, sorted by CPU or GPU, to find the app.
Shared by both editions
- Menu bar meter CPU and GPU use at a glance, with network after them.
- Thermal alerts When macOS starts slowing the Mac down to cool it.
- History Charts of CPU and GPU over time, a log of recent alerts, and CSV export.
- Open at login Start with the Mac, so it's always in the menu bar.
- Private No accounts and no tracking.