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Gluco Glance

Read your CGM sensor over Bluetooth. Offline, no accounts, no tracking.
New in version 1.0
First release.

Reads the Sibionics GS1 and the Abbott FreeStyle Libre 2 over Bluetooth, several sensors at once, each with its own colour on the graph. Fingerprick calibration, low and high alerts, a daily log, a home screen widget, and everything kept on the phone.
Gluco Glance reads your glucose level straight off a CGM sensor over Bluetooth and shows it: the current number, which way it is heading, and a graph you can scrub through.

NOT A MEDICAL DEVICE. It is not approved by any regulator and has had no clinical testing. A reading here can be wrong, late, or missing. Do not treat a high or a low on the strength of this app alone. Check with your meter, and follow the advice of whoever looks after your diabetes.

SENSORS
Sibionics GS1, found on its own with nothing to pair.
Abbott FreeStyle Libre 2 and 2 Plus, European models, paired with one NFC tap.
You can run several at once, and every sensor you have worn keeps its own colour and its own line on the graph.

WHAT IT DOES
Dashboard with the reading, the trend, how long the sensor has left, and a graph you can pinch between 3, 6, 12 and 24 hours.
Daily Log for meals, notes and moods, each carrying what the sensor said at that moment.
Calibration from a fingerprick, so readings slide between pricks as the sensor drifts.
Alerts, where a low breaks through a silenced phone and a high does not.
A home screen widget and a permanent notification, so you do not have to open the app to use it.

PRIVACY
The app has no INTERNET permission, so it cannot send your data anywhere. Android enforces that, you do not have to take my word for it. No cloud backup, no analytics, no crash reporting, no adverts, no accounts. It ships with no third-party libraries at all.

Sibionics, FreeStyle and Libre are trademarks of their owners. This project is not affiliated with or endorsed by Sibionics or Abbott.

Versions

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

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  • Version 1.0 (1) suggested Added on Sep 20, 2026

    This version requires Android 6.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • access precise location only in the foreground
      This app can get your precise location from location services while the app is in use. Location services for your device must be turned on for the app to get location. This may increase battery usage.
    • pair with Bluetooth devices
      Allows the app to view the configuration of the Bluetooth on the phone, and to make and accept connections with paired devices.
    • access Bluetooth settings
      Allows the app to configure the local Bluetooth phone, and to discover and pair with remote devices.
    • connect to paired Bluetooth devices
      Allows the app to connect to paired Bluetooth devices
    • discover and pair nearby Bluetooth devices
      Allows the app to discover and pair nearby Bluetooth devices
    • run foreground service
      Allows the app to make use of foreground services.
    • run foreground service with the type "connectedDevice"
      Allows the app to make use of foreground services with the type "connectedDevice"
    • control Near Field Communication
      Allows the app to communicate with Near Field Communication (NFC) tags, cards, and readers.
    • show notifications
      Allows the app to show notifications
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • ask to ignore battery optimizations
      Allows an app to ask for permission to ignore battery optimizations for that app.
    • control vibration
      Allows the app to control the vibrator.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.

    Download APK 209 KiB PGP Signature | Build Log