Last updated 08-08-2026
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Sugar Sense
Sugar Sense pulls live glucose from FreeStyle Libre, Dexcom, and Nightscout into one healthcare companion for people who already wear a CGM. You get predictive heading-low alerts, glanceable Lock Screen and Watch surfaces, and Care Circle so family gets the same lows you do. It is software only, not a medical device, and it does not replace your CGM's own alarms.
Most CGM companion setups either bury family sharing in a second app or put basic alerts behind a paywall. Sugar Sense keeps the safety loop free forever: live readings, customizable high and low alerts, the predictive low warning, and Care Circle following. Premium covers convenience layers like Watch apps, food-photo carb estimates, and PDF reports. It is also deliberately dose-free, so it never suggests insulin amounts or correction factors.
It fits people managing diabetes on Libre or Dexcom who want the number where their eyes already are, on the phone, watch, or a partner's device. Parents and caregivers use Care Circle for remote following, and the founder built it after more than 12 years with type 1 diabetes himself.
Predictive heading-low alert that can warn about 20 minutes before a likely drop
Connects Libre 2/3 via LibreLinkUp, Dexcom G6/G7/ONE via Share, and Nightscout
Care Circle shares the same low and high alerts with family, plus optional emergency call
Live glucose on Lock Screen, Dynamic Island, Apple Watch, and home-screen widgets
LibreLinkUp readings refresh about every 5 minutes once connected
Premium adds food-photo carb estimates, pattern insights, and PDF appointment reports
Live monitoring, predictive alerts, and Care Circle family following stay free forever with no card required to start.
Dose-free design never suggests insulin doses, carb ratios, or correction factors.
Built by a founder who has lived with type 1 diabetes for more than 12 years and shaped alerts around alarm fatigue.
Extends beyond the phone to Apple Watch, web dashboard, Chrome and Firefox extensions, Windows tray, and Alexa.
Not a medical device; alerts are best-effort and must never replace your CGM's own alarms or fingerstick confirmation.
Depends on third-party CGM cloud sharing such as LibreLinkUp or Dexcom Share, so delays and No Data gaps can happen.
The download page still lists the native Android app as coming soon, even though the marketing site shows Play badges.
Premium dollar prices are not published on the website; billing runs through Apple or Google in-app purchase.
Does Sugar Sense have a free plan?
Yes. Sugar Sense keeps live glucose, graphs, statistics, the logbook, Apple Health sync, Care Circle family following, and every core alert (including the predictive heading-low warning) free forever. A Premium subscription adds food-photo carb estimates, AI pattern insights, Apple Watch and Wear OS apps, Live Activity / Dynamic Island, emergency calling, and PDF report export.
Which CGMs does Sugar Sense work with?
Sugar Sense works with FreeStyle Libre 2 and 3 through LibreLinkUp, Dexcom G6, G7, and ONE through Dexcom Share, and self-hosted Nightscout sites with a URL and read-only token. It can also read glucose already saved to Apple Health or Health Connect, or accept manual meter entries. No extra sensor hardware is required.
Can family follow glucose with Sugar Sense?
Yes. Sugar Sense Care Circle lets people you choose follow your readings in real time and receive the same low and high alerts you do. An optional emergency phone call can fire on urgent lows. Followers use their own devices and alert settings, and you can revoke access anytime.
Is Sugar Sense a medical device?
No. Sugar Sense is a companion app that displays data from your CGM. It is not a medical device, does not give medical advice, and should not be used to make treatment or dosing decisions. Keep using your CGM's own app and alarms, and follow your healthcare provider's guidance.
Can I use Sugar Sense without a CGM?
Yes. Sugar Sense lets you log blood glucose meter readings manually, or pull glucose you already save to Apple Health. You still get graphs, statistics, the logbook, and reports. Automatic alerts stay off because they need a live CGM stream.
Does Sugar Sense support mmol/L?
Yes. Sugar Sense lets you switch between mg/dL and mmol/L in Settings at any time. Graphs, alerts, statistics, the watch, widgets, and reports all follow the unit you choose.