Watchface: Nightscout Supercgm by sgitaize

[anne_droid]

Nightscout Supercgm by sgitaize

There’s another cool watchface on the Rebble App Store!

@sgitaize says

A modern Pebble watchface with a clean, grid-based layout for continuous glucose monitoring (CGM) and weather.
Customize rows, colors, and data sources to fit your needs.

Features
• Up to 5 rows (4 on round) – each row can show Weather, Time, Date, Weekday, Steps, Battery, or Nightscout BG
• Per-row color customization and dedicated in-range/high/low BG colors
• Phone-side background fetch for Nightscout BG with adjustable interval
• Weather via Open-Meteo (no API key required)
• Works on color and B/W devices (Pebble Time, Pebble 2, Round…)

Source & Contributions
90% Vibe coded
Open source on GitHub – feel free to suggest features or fork:
GitHub - sgitaize/Nightscout-supercgm: Nightscout Pebble CGM Watchface in 14 Segment Digit Style

Go check it out in the App Store!

Basalt screenshots:

Chalk screenshots:

Expand

Diorite screenshots:

Expand

Aplite screenshots:

Expand

P.S.: I’m just a helpful robot that posted this. But if you are the developer of this app, send a message on Discord to one of the humans that runs Rebble, and they’ll be happy to transfer this thread to you so you can edit this post as you please!

[anne_droid]

Update alert!

sgitaize just released version 1.5 of Nightscout Supercgm!

Go check it out!

Release notes

Focus based redraw of watchface for bug in pebble steel classic

[anne_droid]

Update alert!

sgitaize just released version 2.1 of Nightscout Supercgm!

Go check it out!

Release notes

Release Notes — v2.0 & v2.1
New Row Types
BG Delta — signed glucose change (+6 / -4 / ±0)
BG Timestamp — time of last Nightscout reading (HH:MM)
Rain next 3h — precipitation probability in percent (R 50%)
Heart Rate
Shake to Reveal
Shake or tap replaces up to 5 rows for 5 seconds with a configurable second set of values
All row types available as shake content
Alerts & Behaviour
Vibration on low BG — 3 short pulses, 10-minute cooldown (configurable)
Vibration on high BG — 2 short pulses, 10-minute cooldown (configurable)
Backlight on shake — lights up the display on wrist gesture (Pebble Time and newer)
Bluetooth disconnect — immediate NOCON display + single buzz on connection loss
Colors & Display
Background color — free color choice on color watches; black/white reverse switch on B/W models
B/W Color Reverse — one switch syncs background, all row colors, BG threshold colors, and ghost color together
Ghost grid density — 5 levels (very light to very dense)
Ghost grid on/off — checkbox disables the ghost grid entirely, reflected live in the simulator
Config Website
Live simulator — mirrors watch model, row types, colors, ghost density, and shake preview
DSEG font in simulator — near-accurate 7-segment preview before syncing to watch
Watch presets — Classic, Time, Time Round, Time 2, Round 2, Pebble 2
Color swatches — color shown next to every picker, correct after reload
Inverted state correctly restored — config page reflects actual saved state on reload
Bug Fixes
Trend arrow no longer lingers when a shake row overrides the BG row
BG timestamp renders as HH:MM with colon instead of HHMM
Delta 0 shows ±0 instead of blank
Rain row shows R 50% with percent sign
Timeline banner no longer shrinks the watchface layout
Degree symbol ° disappearing in certain configurations — fixed
Pebble Round 2: correct 200×200 canvas size in simulator
Platforms
All 7 Pebble platforms in one .pbw:
Aplite · Basalt · Chalk · Diorite · Emery · Flint · Gabbro

[anne_droid]

Update alert!

sgitaize just released version 2.2 of Nightscout Supercgm!

Go check it out!

Release notes

Fixes

• #29 mmol display fixed — values like 5.9 now show correctly on watch (was broken due to parseInt rounding)
• #28 Nightscout auth token support — enter your token in settings, it’s appended as ?token= to the API call
• #27 BG timestamp now shows minutes ago (5 MIN / 10MIN) instead of clock time; row layout centered vertically on Pebble Time 2

Improvements

• mmol and mg/dL threshold values stored natively in configured unit — no awkward conversions
• Config UI: threshold inputs adapt step/min/max when switching unit; old configs auto-migrated
• Version bumped to 2.2