Name: NightscoutWatch1 (previously NightscoutWatch)
Rating: 4.8 (32 reviews)
Author: Horsetooth

Disclaimers:
- CGM App is not intended to serve as or to replace the real-time display of CGM data of the primary device or standard blood glucose home monitoring. All therapeutic decisions, including those regarding calculating insulin or other drug dosages, should be based on blood glucose measurements obtained from a blood glucose meter and not on data from the CGM App.

- The CGM app is not intended to analyze, interpret, or modify the CGM data received from the primary device.

- The CGM App is not intended to replace self-monitoring practices as advised by a physician.

(Note: the wording, "a blood glucose meter", is from Garmin directly - In my opinion I believe they meant to say "approved therapeutic device" instead.)

Watchface that uses ConnectIQ 2 background API to fetch CGM data from your personal Nightscout site, and/or local xDrip+ (or compatible local web service), or OpenAPS rig.
NOTE: This app is no longer being updated (except to add tiny-memory devices that cannot be supported by the new app.) The updated version should be preferred if compatible: https://apps.garmin.com/en-US/apps/2a6da9b4-af1a-41d9-8586-5022ce7c6c3b

THIS APP MUST NOT BE USED TO MAKE MEDICAL DECISIONS.
There is no warranty for this program.
This app is not supported or endorsed by Dexcom, Abbott, Libre, Medtronic, Nightscout, or any other party.

Requirements:
- Requires a Nightscout site, or xDrip+, or OpenAPS.
- Set URL and other watch app settings in the phone's Connect IQ app., device application settings.
- No watchface settings are required for xDrip+, but you must enable the phone's xDrip+ inter-app web services option.
- The Connect IQ app on your phone must stay active and able to use data in the background - there are usually system settings on your phone that allow that, for both battery and mobile data.
- Must have watch setting for "Time Source" set to "Auto" (and not "Manual"), to ensure the watchface can sync up properly to the CGM data.
- If using mmol units with Nightscout, make sure your site's configuration variable DISPLAY_UNITS is set to mmol (and not mmol/L).
- Help with setup? Try https://medium.com/trit1dtech/how-to-view-cgm-data-on-a-garmin-watch-or-bike-computer-6846b06801e2
- Older Garmin devices? Try https://apps.garmin.com/en-US/apps/8ea31125-3ceb-4937-941c-3e25fcd87ad3
- Questions? Contact me via the Connect IQ app "App Support" button.

Info:
    *** There are no tone or vibration alerts possible in Garmin watchfaces, alerts affect display only. ***
    Watchface will attempt each interval's load from Nightscout first, and if it can't be reached then offline URL.
    Monitor status codes show which info is available and being monitored.
    Error status code and data is shown only when info is available and in error state, as noted.

    Monitor/Error status code key:
     * BT = bluetooth is not connected between Garmin device and phone
     * BLE = bluetooth was not connected between Garmin device and phone during last data request
     * W = watch (Garmin device) battery status is 20% or lower (configurable)
     * L = closed loop hasn't run in over 15 minutes
     * P = pump is suspended, or battery is 25% or lower, or 1.25v or lower (configurable)
     * UP = loop uploader (iPhone or rig) battery is 25% or lower (configurable)
     * R = pump reservoir is 20U or lower (configurable)
     * CA = cannula age is over 72 hours (configurable)

    In addition:
        - Elapsed time will be highlighted when BG is over 15 minutes old,
        - BG will be highlighted when out of range [70, 240] (mg/dL), or [3.9, 13.3] (mmol) (configurable)
        - Date will be highlighted when any phone notifications are waiting, per Connect IQ.

    Loop and pump status is shown when info is available:
     * e = eventual outcome (bg) according to prediction from Loop or OpenAPS
     * i = IOB
     * c = COB
     * t = last enacted temp basal
