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mectrics

Mectrics is a free, open source macOS menu bar system monitor that shows live CPU, memory, battery, network, disk, GPU, temperature, and fan readings. It keeps monitoring local to your Mac and adds detail popovers, alerts, and multilingual support.

mectrics

Overview

Mectrics is a free, open source system monitor for macOS that lives in the menu bar. It shows key system readings such as CPU, memory, battery, network, disk, GPU, temperature, and fans at a glance.

The app is designed to stay lightweight and local. The site says nothing leaves your Mac, and the interface lets you choose which metrics appear, open more detail when needed, and set thresholds for alerts when something changes.

Core features

Menu bar system monitoring

Shows live CPU, memory, battery, network, disk, GPU, temperature, and fan readings directly in the macOS menu bar so you can check system status without opening another app.

Selectable status items

Lets you choose which metrics stay visible, so the menu bar can focus on the numbers you care about instead of showing every available reading.

Threshold alerts

Supports per-item thresholds that trigger an alert when a reading stays outside the expected range, which helps surface problems without constant checking.

Detail popovers

Each menu bar item opens a popover with more detail, including examples such as per-core CPU bars and disk capacity plus live throughput.

Localized interface

Includes language support for English, Turkish, Russian, Spanish, French, and Brazilian Portuguese, with an in-app language picker under General Settings.

Local utilities and cleanup

Provides diagnostics and system-summary exports, plus a local attention log and a clean uninstall flow that removes app data without administrator access.

Common use cases

  • Monitor a Mac from the menu bar

    Useful when you want a constant readout of CPU, memory, battery, network, disk, GPU, temperature, and fan status without keeping another window open.

  • Keep the menu bar focused

    Helpful for users who only want a few metrics visible and prefer a cleaner menu bar layout with the rest hidden until needed.

  • Inspect system detail quickly

    Fits troubleshooting workflows where you want a quick popover view, such as per-core CPU behavior or disk capacity and throughput, before digging deeper.

  • Review system activity locally

    Appropriate for users who want a local-only utility with exports and logs they can review on the Mac itself rather than sending data to a cloud service.

  • Use the app in a supported language

    Useful for multilingual users who want the app and widgets to follow a supported language and use the macOS terminology they already see in the system UI.

Pros and Cons

Pros

  • Free and open source.
  • Covers a broad set of macOS health metrics in one menu bar app.
  • Offers detail popovers instead of forcing a separate dashboard for every reading.
  • Includes alert thresholds and a local attention log for tracking issues.
  • Supports multiple languages and an in-app language picker.

Cons

  • The public site does not provide a pricing page with a paid plan or feature tiers, so the cost model is only partially documented.
  • The changelog and homepage give a strong feature summary, but there is no full docs page in the provided sources covering compatibility, integrations, or all behavior details.

FAQ

What does Mectrics do?

Mectrics is a macOS menu bar system monitor. It shows live readings for components such as CPU, memory, battery, network, disk, GPU, temperature, and fans.

Is Mectrics free to use?

Yes. The site describes Mectrics as free and open source.

What languages does Mectrics support?

The changelog says Mectrics includes an in-app language picker and complete localizations for English, Turkish, Russian, Spanish, French, and Brazilian Portuguese.

Does Mectrics keep data local?

Yes. The changelog says diagnostics and system-summary exports can be copied or exported as plain text, and the app also includes a local attention log.

Quick Facts

Category
System Monitor
Platform
macOS
Brand
mectrics
Source domain
mectrics.app
License
Open source / MIT
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