What lowers the score?

Low free space on the startup disk, memory pressure, a busy processor, heat and, on laptops, a worn battery. Each reason is shown with the points it costs.

Does it send my readings anywhere?

No. Readings and their week of history stay on your Mac.

Does it slow my Mac down?

It takes a reading every five minutes while the app runs, and skips readings in Low Power Mode or on a low battery.

Can it check my SSD for failure?

No. It reports free space, not drive wear. DriveDx or iStat Menus read S.M.A.R.T. data, and Disk Utility’s First Aid checks for errors.

Peekaboo · Mac Health

Check your Mac’s health, and see what to fix

Activity Monitor shows numbers; it doesn’t say whether they’re a problem. Mac Health reads the same things, gives your Mac a score, and tells you in a sentence what’s holding it back.

Download free trial14 days free · macOS 14+ · Updated November 3, 2026

What it does

Six readings, one view: Processor, memory, startup disk, network speed, heat in plain words and, on laptops, the battery. Plus the apps keeping your Mac busy or awake, with Quit right there.
A score with reasons: 0 to 100 in fixed bands, so the same Mac always scores the same. Low disk space, memory pressure, a busy processor, heat and a worn battery each cost points, with a button to Clean Up, Disk Usage, Memory, the busy apps or Battery settings.
A week of history: A reading every five minutes while the app runs, kept on your Mac for a week, skipped in Low Power Mode and paused while the Mac sleeps.
In the menu bar, if you like: Turn on processor, memory pressure and network speed in the menu bar in Settings › General, and click for the score. Shortcuts gets a Get Mac Health action too.

How to use it

1Open Mac Health.⌥⇧⌘H
2Read the score and the reasons it isn’t 100.
3Click the button beside a reason to go to the fix.

When another app fits better

Mac Health has no per-sensor temperatures, fan control, GPU graphs or drive S.M.A.R.T. data. For those, [iStat Menus](/alternatives/istat-menus/), [Stats](/alternatives/stats/) (free) or [TG Pro](/alternatives/tg-pro/) go much deeper. For hardware faults, use Apple Diagnostics.

Questions

What lowers the score?: Low free space on the startup disk, memory pressure, a busy processor, heat and, on laptops, a worn battery. Each reason is shown with the points it costs.
Does it send my readings anywhere?: No. Readings and their week of history stay on your Mac.
Does it slow my Mac down?: It takes a reading every five minutes while the app runs, and skips readings in Low Power Mode or on a low battery.
Can it check my SSD for failure?: No. It reports free space, not drive wear. DriveDx or iStat Menus read S.M.A.R.T. data, and Disk Utility’s First Aid checks for errors.