GGlance - CGM App Libre Dexcom
· vv3.4
About
GGlance shows your FreeStyle Libre or Dexcom CGM glucose on your watch - a glance card and a full 12-hour graph - so you can check your blood sugar without reaching for your phone. Works with FreeStyle Libre 2 and 3 (LibreLinkUp) and Dexcom G6 and G7 (Dexcom Share). Free, no account, no ads.
Support me at https://ko-fi.com/gglance
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SEE MY OTHER APP
GGlance CGM Data Field - your glucose inside activities, with a mini graph, an optional low-glucose vibration alert, and recording into the activity for Garmin Connect.
Link: https://apps.garmin.com/apps/7c75ab12-67c8-47ad-8fb9-e6253576c752
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SETUP
Follow the step-by-step guide at https://gglance.app/en/tutorials
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FEATURES
• Glance card - current glucose, trend arrow, and a mini history line, color-coded by range
• 12-hour graph - large value with trend, a color-coded curve, your high/low guide lines, and the period's high & low
• Adjustable graph range - 1 to 12 hours
• Color zones - white in range, yellow/orange when high, red when low
• Fresh on every look - opening the glance or app fetches a new reading, shows its age, and greys it when stale, so you never read a stale number unknowingly
• On-demand refresh - press START
• Choose your units - mg/dL or mmol/L
• Set your own high and low targets, plus 24-hour or AM/PM time
• Automatic region detection
• 90+ Garmin watches: Forerunner, Fenix, Epix, Venu, Vivoactive, Instinct 3, Enduro, Edge
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REQUIREMENTS
Your phone nearby with internet, so the watch can fetch data. Pick your CGM source in the settings, then enter that account's login.
IF YOU USE FREESTYLE LIBRE
• A Libre 2 or 3 sensor with the LibreLink app on your phone
• A LibreLinkUp (https://www.librelinkup.com) "follower" account that follows your sensor - enter ITS email and password, not your main Abbott/LibreLink login
• Accept any pending terms in the LibreLinkUp app first, or sign-in is refused
IF YOU USE DEXCOM
• A Dexcom G6 or G7 (G4/G5 also work). Dexcom ONE and ONE+ are NOT supported - they have no Dexcom Share, so no app can read them
• Dexcom Share switched ON with at least one follower (Dexcom app, Settings then Share). With no follower Dexcom uploads nothing, so there is nothing to read - you can follow yourself from a second phone using Dexcom Follow
• Enter the login of the PERSON WEARING THE SENSOR - the account that publishes the readings. This is the opposite of Libre: a Dexcom follower login signs in but shows no data
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PRIVACY
No GGlance account, no tracking, and your glucose history is never stored on a server.
• FreeStyle Libre: your password never leaves your phone - the watch signs in directly with Abbott
• Dexcom: sign-in goes through the GGlance relay, as Garmin watches cannot read Dexcom's replies directly. Credentials are sent encrypted, forwarded only to Dexcom, never stored or logged
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IMPORTANT DISCLAIMER
GGlance is for informational and convenience purposes only. It is NOT a medical device and is NOT intended for diagnosis, treatment decisions, insulin dosing, or any therapeutic purpose. It does not replace your FreeStyle Libre or Dexcom system, a glucose meter, or professional medical advice.
Values may be delayed, inaccurate, or unavailable - availability depends on Libre/LibreLinkUp or Dexcom Share, your phone and watch internet access, and GGlance service status. GGlance does not provide low/high alarms. Always confirm critical values with your official LibreLink or Dexcom app, your sensor, or a blood glucose meter, and follow the guidance of your healthcare provider.
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GGlance is an independent app, not affiliated with, endorsed by, or supported by Abbott, Dexcom or Garmin. "FreeStyle Libre" and "LibreLinkUp" are trademarks of Abbott; "Dexcom" and "Dexcom Share" of Dexcom, Inc. All other trademarks belong to their respective owners.
What's new
Version 3.3 - 3.4
Improve memory performance
improve login
Version 3.2
Dexom is now stable and available worldwide!
Graph range (hours) setting, 1–12h, applies to the graph page and the glance sparkline.
Version v2.1 - 3.1
Dexcom support (beta) - you can now choose Dexcom (Share) instead of FreeStyle Libre under "CGM source". Works with Dexcom G6 and G7; Dexcom ONE / ONE+ are not supported.
Added a loading indicator while the graph is being fetched.
Version 1.8 - v 1.9
Fixes sign-in for users whose LibreLinkUp account lives on a numbered regional server.
Added more watch model.
Version 1.7
Fixes the LibreLinkUp "Accept terms in LibreLinkUp app" sign-in problem: the app now clears pending Terms of Use / Privacy Policy for you, and if anything still needs your action it names exactly which one.
Version 1.6
Auth fix
Version 1.5
Redesigned graph screen
12-hour glucose curve now runs edge-to-edge from the left
Press START anytime to refresh the live value and 12-hour history
Version 1.4
More watches - GGlance now runs on a wide range of additional Garmin watches.
Version 1.3
Hour format - the graph's time axis now shows 24-hour by default (e.g. 16h); switch to AM/PM in settings if you prefer 4p.
Version 1.2
- Forerunner 245 support - GGlance now runs on the Forerunner 245 and 245 Music.
Version 1.1
- mmol/L support - choose mg/dL or mmol/L in settings (mg/dL stays the default).
- More reliable - changing a display setting no longer signs you out, so your glucose keeps updating without interruption.