Macometr — Know what’s using your Mac

Memory, finally explained

Used memory isn’t the same as a Mac under pressure.

A Mac with 60% of its RAM in use can be perfectly comfortable. Macometr shows both numbers side by side, so you don’t chase the wrong one.

RAM used and memory pressure, apart. The amount in use is a quantity. Pressure — Normal, Elevated or Critical — is macOS’s own signal, with a label and a colour.
App, wired, compressed and cached. A short explanation for each part, so “compressed” and “cached” stop being mysteries.
Swap, both ways. How much swap space is occupied on disk, and separately whether anything was actually swapped in the last few minutes.

Macometr's memory window: RAM used 37.7 GB of 64 GB, pressure Normal, a bar with App 24.2 GB, Wired 6.4 GB, Compressed 7.1 GB and Cached 15.3 GB, each with a one-line explanation, and the apps and simulators using memory. — Example dataThe memory window, with each part explained

What’s using memory

Apps, simulators and background programs — grouped.

Helpers are counted with their app. A Windows game running through CrossOver shows up as itself, not hidden inside CrossOver. Hundreds of simulator processes become one clear row.

Ranked by measured footprint, with real app icons and process counts.
Honest about gaps. If some processes can’t be read, the row says “partial”; the help shows exactly how much was covered.
No cleaning tricks. Macometr doesn’t quit, flush or “optimise” anything. It shows you what’s there; you decide.

Macometr's help for the memory list: footprints are measured and ranked but aren't a total of RAM used; coverage says 332 of 527 processes attributed to apps and 9 more listed as background processes. — Example dataThe ? help explains coverage instead of cluttering the list

Product tour

See it in under a minute.

Three short silent tours of the real app with example data. Captions are included.

Product tour · example data · no audio

Usage over time

Is your Mac busier than it used to be?

Macometr keeps up to a year of history on your Mac and, when prior recorded data is available, compares a period with the one before it — fairly, using only the time it actually recorded.

7 days, 30 days, 90 days, a year, or your own dates. Choosing a period never deletes anything.
Like-for-like comparisons, when prior recorded data is available. Each figure uses its own period’s recorded time, and the coverage is always shown.
Gaps stay gaps. Time when the Mac slept or Macometr wasn’t running is never counted as idle.

Macometr's Usage History for the last 365 days: 1,819 hours recorded on 214 days, a summary of memory, swap, CPU, GPU and thermal state, and app lists ranked by memory and CPU. — Example dataA year of history

Compared with the period before

When prior recorded data is available: elevated memory pressure, compression, swap traffic, CPU and GPU load and thermal state — this period next to the one before it, each as a share of its own known time.

Day by day, all year

Charts show when memory pressure rose and when swap traffic happened. Older days are kept as exact daily totals, so a full year stays small.

The selected period card: the last 30 days, 187 hours recorded on 22 days, compared with the previous 30 days: elevated memory pressure 7% versus 8% of known time, compressed memory 17.5 GB, swap 5 MB per hour, CPU 17% and GPU 20% average. — Example dataPeriod comparison

Year charts of elevated memory pressure per day and swap written and read back per day, January to October. — Example dataPressure and swap across a year

App history · optional

Which apps used memory and CPU — over weeks, not seconds.

Turn on app history and Macometr ranks apps by sustained memory footprint and by CPU time for any period or day. It’s off until you choose it.

Memory and CPU, measured over the time each app was observed.
Only what you opt into. App names stay on your Mac. Live background programs appear in the panel but aren’t added to history.

App history for the last 30 days: by memory, Xcode 4.0 GB average, Safari 2.2 GB, Mail 946 MB, Messages 320 MB and Photos 912 MB; by CPU time, Xcode 57 hours, Safari 17 hours, Mail 3 hours 16 minutes. — Example dataApps using resources, last 30 days

Shareable reports

Copy a text report or share a clean image when you’re asking a friend, a forum or support about your Mac. App names are left out unless you include them.

Anonymous by default. No machine name, serial number, user name or file paths.
Plain language. Every report carries a short guide to reading it.

A shared Macometr report image for the last 90 days with app names excluded: 544 hours recorded on 64 days, memory pressure normal 93% of known time, swap, CPU, GPU and thermal summaries. — Example dataA shared report, app names left out

The same shared report image with app names included by choice, listing Xcode, Safari, Mail, Messages and Music by memory and CPU time. — Example dataThe same report with app names, by choice

Quiet by design

A monitor you forget about until you need it.

Lives in the menu bar. CPU, GPU and RAM at a glance, with green, orange and red only when there’s something worth noticing.
Local by default. History stays in Macometr’s private container on your Mac. No account, no analytics.
Measured, not guessed. Where macOS doesn’t tell Macometr something, it says so instead of inventing a number.

Macometr is made by Mercury Project s.r.o., a small independent developer. It started as a way to understand our own Macs and grew into the tool we wanted.

Try free for 7 days See pricing