Sugar Sense for Home Assistant
Your glucose as ordinary Home Assistant sensors. Put it on a dashboard, color a lamp by your zone, have a speaker say the number. Works with FreeStyle Libre, Dexcom and Nightscout, and connects with a short code: no passwords.
Free and open source. No subscription needed. Works with Home Assistant 2025.3 or newer.
How to connect
- Press Open in HACS above, download Sugar Sense and restart Home Assistant.
- Go to Settings, Devices & services, Add integration and pick Sugar Sense. Home Assistant shows a code and a QR code.
- Scan the QR code with your phone, or open app.sugarsense.io/ha and type the code. Sign in with your Sugar Sense account and tap Connect.
- Press Submit in Home Assistant. Your sensors appear and refresh once a minute.
Light color by zone
A lamp that is red when you are low, green in range and amber when high.
A spoken low
One sentence on a speaker when glucose goes low, once per low, with quiet hours.
Night light when out of range
A dim light at night while you are out of range, off when you are back. All three ship as ready-made blueprints: pick your sensors and your light, done.
What you get
- Glucose in your own unit, trend, change and zone.
- In range, the simplest thing to build an automation on.
- Last reading, time in range today, and your four limits for a graph.
- Alerts paused, and the day of your CGM sensor when the app knows it.
Home Assistant shows and automates. It never replaces your alerts. A lamp or a speaker depends on your network, your Home Assistant and the device itself. Alerts stay on your phone.
Questions
Which sensors does it work with?
Whatever feeds your Sugar Sense account: FreeStyle Libre, Dexcom, Nightscout and the other sources the app supports. Home Assistant talks to Sugar Sense only, never to Abbott or Dexcom.
Do I type my Libre or Dexcom password into Home Assistant?
No. Home Assistant shows a short code, you confirm it in your Sugar Sense account, and Home Assistant receives one token that can only read. You can disconnect it at any time.
Is it free?
Yes. The integration is free and open source, and it needs no subscription. You only need the free Sugar Sense app with your sensor connected.
Can I rely on a lamp or a speaker to warn me about a low?
No. Home Assistant shows and automates, it never replaces your alerts. A lamp depends on your network, your Home Assistant and the lamp itself. Alerts stay on your phone.
What happens when a reading gets old?
A reading older than 15 minutes is not current. From that minute the glucose, trend, change and zone sensors become unavailable, so a dashboard goes grey and an automation never acts on an old number.
mg/dL or mmol/L?
The unit you use in the app, with the same rounding as your phone, so the two never show different numbers.
New to Sugar Sense? Start on your phone: download the app and connect your sensor, then come back here.