Name: GGlance - CGM DataField Libre Dexcom
Rating: 5 (6 reviews)
Author: GGlance

GGlance shows your FreeStyle Libre or Dexcom CGM glucose on your data screen while you train - big value, trend arrow, and a color-coded history graph - so you can watch your blood sugar on a run or ride without reaching for your phone. Works with FreeStyle Libre 2 and 3 (LibreLinkUp) and Dexcom G6/G7 (Dexcom Share). Free, no ads.

Support me at https://ko-fi.com/gglance

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SEE MY OTHER APP

https://apps.garmin.com/apps/bddd4e35-05ea-4bd9-8312-4021ef5a68c7

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SETUP

1. Follow the step-by-step guide at https://gglance.app/en/tutorials
2. Add GGlance as a Connect IQ data field to an activity screen
3. Enter your CGM login in THIS field's settings - data fields have their own, separate from the GGlance app

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FEATURES

• Big value with trend arrow, color-coded by range
• History graph, 1-12 hours, with high/low guide lines and a live "now" dot - or off for a bigger number
• Saves glucose into the activity - the curve appears on your Garmin Connect chart, with avg, min and max
• Low alert - vibrates and turns red when a FRESH reading drops below your low threshold (can be turned off)
• Color zones - white in range, yellow/orange high, red low
• Reading age shown, and the value greys when stale
• Units in mg/dL or mmol/L, recorded in the same units
• Your own high/low targets, update interval (1-5 min), 24h or AM/PM
• Any activity, 100+ watches: Forerunner, Fenix, Epix, Venu, Edge

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REQUIREMENTS

Your phone nearby with internet during the activity. 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 following your sensor - enter ITS email and password, not your 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 too). Dexcom ONE and ONE+ are NOT supported - no Dexcom Share, so no app can read them
• Dexcom Share 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
• Use the login of the PERSON WEARING THE SENSOR - the account that publishes readings. Opposite of Libre: a Dexcom follower login signs in but shows no data

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PRIVACY

No 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 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 Libre or Dexcom system, a glucose meter, or professional medical advice.

Values may be delayed, inaccurate, or unavailable. The low-glucose vibration alert is a convenience only - it can be delayed or missed (out of phone range, alert off, stale reading, or the field not on your active screen) and must NOT be relied on as a medical alarm.

Always confirm critical values with your official LibreLink or Dexcom app, your sensor, or a meter, and follow your healthcare provider's guidance. Availability depends on your CGM service, your phone and watch internet, and GGlance status.

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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. Other trademarks belong to their owners.