mectrics

Name: mectrics
Brand: mectrics

A free, open-source menu bar app that shows your Mac's CPU, memory, battery, and more.

softwareOS & Utilitiesmacossystem-monitormenu-bar

What is mectrics?

mectrics is a lightweight, open-source system monitor that lives in the macOS menu bar and displays real-time hardware metrics including CPU, memory, battery, network, disk, GPU, temperature, and fan speed. Users can customize which metrics are visible, set alert thresholds for specific values, and click any item to open a detailed popover showing granular data like per-core CPU load or disk throughput. A "Compact Health" mode folds the entire machine's status into a single menu bar item that stays quiet until something needs attention, and the app processes everything locally with no network requests, so nothing leaves the Mac. It is distributed under the MIT license, supports headless automation through command-line tools, and is localized into English, Turkish, Russian, Spanish, French, and Portuguese.

SpecificationsAI-estimated

deploymentDesktop App

open source✅ Yes

api available❌ No

support optionsGitHub issues

key integrationsCommand-line tools for automation

Key Features of mectrics

Displays live CPU, memory, battery, network, disk, GPU, temperature, and fan data in the menu bar.

Lets users choose exactly which metrics appear in the menu bar to avoid clutter.

Supports custom alert thresholds that notify the user when a metric crosses a set value.

Opens detailed popovers on click showing granular data like per-core CPU load and disk throughput.

Includes a Compact Health mode that condenses overall machine status into one quiet menu bar item.

Processes all metrics locally with zero network requests for full offline privacy.

Provides command-line tools for headless automation and scripting.

Is localized into six languages including English, Turkish, Russian, Spanish, French, and Portuguese.

Use Cases for mectrics

At-a-glance system health monitoring

Users who want quick visibility into CPU, memory, and thermal load without opening Activity Monitor can rely on the menu bar display.

Scripted hardware monitoring

Developers can use the command-line tools to pull hardware metrics into their own scripts or automation workflows.

Pros & Cons of mectrics

Pros

Completely free and open source under the MIT license
No network requests at all, so it works fully offline and privately
Very small download size at roughly 5 MB
Includes command-line tools for scripting and automation

Cons

macOS only, with no Windows or Linux version
Requires macOS 15 or later, excluding older systems
As a free open-source project, support depends on community and maintainer availability rather than a formal support team

Frequently Asked Questions

Does mectrics send any data over the network?

No, all metrics are processed locally on the Mac with no network requests made.

Is mectrics free?

Yes, it is completely free and distributed under the MIT open-source license.

What macOS version is required?

mectrics requires macOS 15 or later.

Pricing Overview

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Free

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