mectrics.app

mx

ns

launch2.spaceship.net

launch1.spaceship.net

caa

txt

google-site-verification=hgO_yZd8vBQ94ARmyNvLYiqZJzjRFXej3oofk2OR6Ro

dmarc

User-Agent: *
Allow: /

Host: https://mectrics.app
Sitemap: https://mectrics.app/sitemap.xml

# mectrics

> Free, open source system monitor for the macOS menu bar. CPU, memory, battery, network, disk, GPU, temperature and fans at a glance. Nothing leaves your Mac.

mectrics is a native macOS menu bar system monitor, written in Swift. Each
enabled module draws a readable value in the menu bar, with a live sparkline
for the four metrics where a trend is informative. A click opens a popover
with the detail behind that value.

## Facts

- Platform: macOS 15 (Sequoia) or later, Apple silicon and Intel
- Price: free, and open source under the MIT license
- Latest version: v1.9.1 (5.4 MB download)
- Privacy: no analytics, no identifiers, no crash reports. Every reading comes
  from a local, read-only system interface, and nothing about the machine
  leaves it. The only network request the app makes is an update check. It asks
  once whether it may make that check on its own; until answered, and whenever
  the answer is no, the check happens only when the user asks for it. Consent
  changes when the check happens, not what it carries: system profiling is
  disabled, so nothing about the user or the Mac is attached, and an update is
  never downloaded or installed unattended.
- Interface languages: English, Türkçe, Русский, Español, Français, Português, 简体中文

## What it measures

- CPU usage and per-core load
- Memory usage, swap and pressure
- Battery level, health and cycles
- Network upload and download activity, with a throughput graph
- Disk capacity and read/write throughput
- GPU utilization
- CPU, memory and GPU temperature
- Fan speed

Hardware that is not present hides itself: no Fans module on a fanless
MacBook Air, no Battery on a Mac mini. A missing reading shows a dash rather
than a fabricated zero.

## Beyond the readings

- The Dashboard: one menu bar icon holding the readings you do not need in
  view every second, opened as cards. Each module chooses its own place —
  its own item, the Dashboard, both, or off. That icon carries the health
  badge and opens with any active condition at the top
- Alert rules: sustained notifications with a live preview and test delivery.
  A rule watches either a threshold you pick or a state macOS reports itself:
  the Mac slowing its CPU and GPU down to cool off, and kernel memory
  pressure. A hot sensor is not the same as a machine that has actually been
  slowed, and memory can be nearly full with nothing wrong
- Attention Log: a local, exportable record of what tripped and when
- Energy Guard: sampling that steps down under Low Power Mode and thermal
  pressure
- Menu bar builder: a visual layout editor where components are toggled by
  clicking their live preview
- Widgets: small, medium and large WidgetKit overviews for Notification Center
- Headless CLI: a read-only `mectrics` command bundled inside the signed app,
  for Macs whose menu bar nobody looks at. It reads the rules configured in the
  app and never changes them. `mectrics check` exits 0 when every reading is
  within its limit, 1 when a limit is crossed and 2 when nothing is configured
  or a reading is unavailable, which is enough for cron without parsing
  anything; `--json` adds the detail. `mectrics snapshot` captures every
  available module once, and `mectrics alerts watch` streams activation and
  recovery events as newline-delimited JSON. `mectrics alerts watch --json
  --heartbeat 60` adds tagged records — readiness, periodic liveness, and
  sampling-coverage changes — so a supervisor can tell a quiet Mac from a
  process whose sensors stopped reporting. `mectrics doctor` explains a
  silent watch: it validates the saved rules, which alerts the hardware can
  actually cover, the installed command link and the power source, as text or
  JSON. Installed on request as a symlink at /usr/local/bin/mectrics — no
  second download and no background service

## Links

- Website: https://mectrics.app
- Download (.dmg): https://github.com/farukkamcici/mectrics/releases/latest/download/Mectrics.dmg
- Source: https://github.com/farukkamcici/mectrics
- Changelog: https://mectrics.app/changelog
- Privacy statement: https://mectrics.app/privacy
- License: https://github.com/farukkamcici/mectrics/blob/main/LICENSE

## Author

Faruk Kamçıcı, https://github.com/farukkamcici