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macOS 26+ · Apple silicon · Open source

Barometry

Live system stats in your Mac's menu bar, with a detailed dashboard of load, temperatures, power, and more a click away.

Get Barometry View on GitHub

Signed and notarized DMG from the latest GitHub release, or install with Homebrew: brew install --cask wolfftech/tap/barometry. Requires macOS 26 or later on Apple silicon.

Live system stats in your Mac's menu bar, with a detailed dashboard a click away.

Barometry shows CPU, GPU, memory, network, sensor, and battery readings as compact menu bar graphs and gauges. Click any of them to open a dashboard with per-core load, temperatures, power, clocks, and disk usage.

Features

  • Menu bar modules for CPU, GPU, memory, network, sensors, and battery
  • One menu bar item per module, or a single combined item in the order you choose
  • A dashboard in two styles, an instrument cluster of dials or a list of rows with live trends, with sections you can hide
  • Details beside the dashboard: hover a section to see its history, breakdown, and top processes, or click it to keep them open
  • Temperatures in °C or °F, and a choice of network interface
  • A refresh interval of 1, 2, or 5 seconds, with 1-second updates while the dashboard is open
  • Keep Awake, which stops idle sleep and keeps the display on, marked with a cup on the battery in the menu bar
  • Launch at login
  • Under 1% CPU while idle

Installation

Barometry requires an Apple silicon Mac running macOS 26 or later.

Homebrew

Install Barometry from the Wolff.Tech Homebrew tap:

brew install --cask wolfftech/tap/barometry

Manual download

  1. Download the signed .dmg from GitHub Releases, or build from source.
  2. Open the disk image and drag Barometry to /Applications.
  3. Launch Barometry from /Applications. It appears in the menu bar.

Updates

Barometry uses Sparkle to check GitHub Releases for updates. Choose Check for Updates… in Settings → Updates, or turn on automatic checks there.

In-app updates work only after you copy Barometry to /Applications. macOS translocates apps launched from a disk image or ~/Downloads, so Sparkle can't update them in place. Homebrew installs update the same way.

Getting started

Barometry lives in the menu bar and has no Dock icon. Click a menu bar item to open the dashboard, and hover or click a section to see its details. Choose Settings… (⌘,) to pick modules, the layout, and the refresh interval. Quit from the dashboard or with ⌘Q.

Turn on Keep Awake with the cup button in the dashboard's footer, or ⌥-click the battery item. It stays on until you turn it off or quit Barometry.

In the individual layout, hold ⌘ and drag menu bar items to rearrange them.

Build from source

Install Xcode 27 and XcodeGen, then run:

brew install xcodegen
git clone https://github.com/WolffTech/barometry.git
cd barometry
xcodegen generate
open Barometry.xcodeproj

The Xcode project is generated from project.yml and isn't checked in. Regenerate it after pulling or after adding, removing, or renaming files.

To build from the command line:

xcodebuild -project Barometry.xcodeproj -scheme Barometry -configuration Release -derivedDataPath build build
open build/Build/Products/Release/Barometry.app

Logic lives in the BarometryKit package and is tested with Swift Testing. Run the tests with ⌘U in Xcode, or:

swift test --package-path Packages/BarometryKit

Forks that distribute their own builds must replace SUFeedURL and SUPublicEDKey in App/Info.plist. Otherwise, those builds will check Barometry's official update feed and trust its release signatures.

Releasing

Push a vX.Y.Z tag. The Release workflow runs the tests, then Scripts/release.sh archives Barometry, signs it with Developer ID, notarizes and staples both the app and the disk image, and publishes the DMG, its checksum, and a signed Sparkle appcast.xml to a GitHub release. The build number is the commit count at the tag. Publish every tag as a full release, not a pre-release, because the app's update feed reads the latest release.

The workflow needs these repository secrets: MACOS_CERT_P12 and MACOS_CERT_PASSWORD (Developer ID Application certificate), NOTARY_KEY_P8, NOTARY_KEY_ID, and NOTARY_ISSUER_ID (App Store Connect API key), and SPARKLE_ED_PRIVATE_KEY (exported with Sparkle's generate_keys --account barometry -x).

To check signing locally without submitting to Apple:

SKIP_NOTARIZE=1 Scripts/release.sh 1.0.0

License

Barometry is free software licensed under GPL-3.0-only. Third-party attributions are listed in THIRD_PARTY_NOTICES.md, and details about the corresponding source for each release are in SOURCE.md. PRIVACY.md describes what Barometry stores and sends, and SECURITY.md explains how to report a vulnerability.