Your glucose,
one glance away.
LibreBar puts your FreeStyle Libre reading in the Mac menu bar — live number, trend arrow, and a 12-hour chart. Native, private, and always there.
Free · macOS 14 or later · Apple Silicon & Intel
Everything you need.
Nothing you don't.
LibreBar does one job with care: keep your current glucose where your eyes already are.
Always in the menu bar
Your latest reading and trend arrow, refreshed every minute. A stale-data marker tells you the moment the numbers stop being current.
12-hour chart
Click for a full picture: your target range shaded in green, and any stretch below it drawn in red — aligned to the band, exactly.
Desktop widgets
Small, medium, and large widgets keep glucose on your desktop. They mirror the menu bar within a minute, automatically.
mg/dL and mmol/L
One click switches units everywhere — menu bar, panel, chart, stats, and widgets stay consistent.
Zero upkeep
Launch at Login keeps LibreBar always running, and the app tells you when a new version is out — you'll never need to check back here.
Native, all the way down
SwiftUI, Swift Charts, and WidgetKit. It looks and behaves like part of macOS because it's built from exactly what macOS is built from.
Widgets for every desktop.
Three sizes, one source of truth. The large widget carries the full story: reading, chart, and 12-hour stats.
Pictures show invented sample readings, never a real person's glucose.
How it works.
Macs can't talk to Libre sensors directly — no NFC, no sensor pairing. LibreBar reads your data through Abbott's LibreLinkUp sharing service, the same one family members use to follow a loved one's glucose.
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Share from LibreLink
In the LibreLink app on your phone, connect LibreLinkUp and invite yourself. Your phone keeps uploading readings as it already does.
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Accept in LibreLinkUp
Sign in to the LibreLinkUp app with your follower account and accept the invitation. That account is what LibreBar uses.
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Sign in to LibreBar
Enter the LibreLinkUp account in LibreBar once. Your password goes to the macOS Keychain, and readings appear within a minute.
On the roadmap: LibreLinkUp accounts that follow more than one person. Today LibreBar shows the first connection on the account; a future version will let you choose which one to follow, and switch between them.
Private by architecture, not by promise.
- Keychain only. Your credentials live in the macOS Keychain — never in files, preferences, or logs.
- Two destinations, both yours to see. Glucose data flows only between your Mac and Abbott's LibreView servers. Once a day the app also fetches a tiny version file from librebar.app to tell you about updates — nothing about you is sent. Our server counts those requests in aggregate to estimate how many copies are running; nothing identifying is stored. No analytics scripts, no telemetry, no third parties.
- Sandboxed. The app runs in the macOS App Sandbox with network-client access and nothing more.
- Local first. Readings are cached only to feed your widgets, on your Mac, in the app's own container.
LibreBar is not a medical device. It is a convenience display for data your FreeStyle Libre system already collects. Never use it for treatment decisions — confirm with the LibreLink app or your reader.
FreeStyle Libre, LibreLink, LibreLinkUp, and LibreView are trademarks of Abbott. LibreBar is an independent project, not affiliated with or endorsed by Abbott, and uses the unofficial LibreLinkUp API.
Get LibreBar.
LibreBar is free, native, and notarized by Apple. Download it, drop it in Applications, and sign in with your LibreLinkUp account.
Download LibreBar Set up LibreLinkUp first
Version 1.3.5 · 2 MB · notarized · updates install themselves
Requires macOS 14 Sonoma or later, a FreeStyle Libre sensor, the LibreLink phone app, and a LibreLinkUp follower account.
Questions, ideas, or something not working? Email Bruce — LibreBar is built by one person who checks it every day, and hearing from someone else who does is the best part.
What's new.
Straight from the app's own release notes — the same words the update dialog shows.
LibreBar 1.3.5 July 2026
- Fixed the stale-data warning in the menu bar. When LibreBar could not reach LibreLinkUp at all, the last reading kept showing with no ⚠︎ — looking current while it quietly aged. The warning now appears on time no matter why the data stopped.
- Check for Updates is now properly dimmed while a check is already running, and LibreBar stops retrying every minute if its saved password is removed from the Keychain.
Earlier releases
LibreBar 1.3.4 July 2026
- LibreBar now tells you when an update is waiting: a dot beside the reading in the menu bar, and a row at the top of the panel you can click to install. Background update alerts used to open behind whatever you were working in, where they could sit unseen for days.
LibreBar 1.3.3 July 2026
- Fixed a widget that came up blank staying blank — it waited a quarter of an hour before looking again, so the only cure was resizing it. It now tries again after a minute.
LibreBar 1.3.2 July 2026
- Fixed the widget freezing after an update. Updating replaces the app while the widget is still running the old copy, so it kept showing an old reading while LibreBar was fetching new ones; LibreBar now wakes it on the first launch after an update.
- What's New: the gear menu now shows what changed in this version and the ones before it.
LibreBar 1.3.1 July 2026
- Preferences moved out of the gear menu into a Settings window, with room for the target range and alerts still to come.
- Settings now shows which LibreLinkUp account is signed in — the panel never said.
- Signing out asks first: it deletes the saved password, which cannot be undone without typing it again.
LibreBar 1.3 July 2026
- LibreBar updates itself. Signed, notarized updates arrive in the background and install with one click.
LibreBar 1.2.1 July 2026
- Fixed the poll loop stopping after a network blip or a Mac waking from sleep — readings now resume on their own.
LibreBar 1.2 July 2026
- Desktop widgets: current reading, chart, and 12-hour stats.
- Sign-in moved to its own window so password AutoFill works.
LibreBar 1.1 June 2026
- A Launch at Login toggle, and a large widget with the chart and 12-hour statistics.
LibreBar 1.0 June 2026
- The first release: your FreeStyle Libre reading in the menu bar, with a trend arrow and a 12-hour chart.