Why Doesn't My FreeStyle Libre Show Up in Apple Health?
Abbott's FreeStyle Libre apps don't write glucose to Apple Health. Dexcom G7, Stelo and Lingo do, about three hours late. Here's how to get a full Libre report anyway.
If your FreeStyle Libre readings are missing from Apple Health, it is not a pairing fault or a permission you missed. Abbott's official Libre apps do not write glucose to Apple Health. Dexcom G7, Stelo and Lingo apps do write glucose, with readings arriving about three hours late. For Libre data, export a LibreView CSV and run it through a free browser CGM report.
Why doesn't my FreeStyle Libre show up in Apple Health?
Apple Health is a shared database. An app can show a glucose reading on its own screen and never publish that value into the shared database. FreeStyle LibreLink, Libre 2 and Libre 3 apps collect readings from the sensor and store them inside Abbott's LibreView system. Abbott's Libre apps do not write glucose to Apple Health. The data is available through the Libre app and LibreView, and it can be exported from LibreView. The pre-launch HealthOS app build does not pair with a CGM over Bluetooth or NFC; it shows glucose that arrives through Apple Health or the HealthOS API, so Libre data will not appear in HealthOS via Apple Health.
LibreLink, Libre 2 and Libre 3 do not write glucose to Apple Health. Dexcom G7, Stelo and Lingo do, about three hours late. For Libre, export from LibreView and read the file directly.
Which CGM apps actually write glucose into Apple Health?
The list is short and uneven.
| App | Writes to Apple Health | Typical delay |
|---|---|---|
| FreeStyle Libre (LibreLink, Libre 2, Libre 3) | No | |
| Dexcom G7 | Yes | About 3 hours |
| Stelo | Yes | About 3 hours |
| Lingo | Yes | About 3 hours |
| SiBionics | No | |
| Syai | No |
Scroll the table sideways for the rest →
Current app behaviour, not sensor hardware. Delays can vary by version and phone settings.
Dexcom G7, Stelo and Lingo are the apps currently writing glucose to Apple Health, typically about three hours behind the sensor. SiBionics and Syai do not, and none of Abbott's Libre apps do. These are the apps covered here; integration can change with app updates.
Why there is a delay
The sensor maker's app controls whether and when glucose samples are written to Apple Health. These writes can appear about three hours late, but delays vary by app and phone settings.
Illustrative, not a real tracing. The sensor maker's app controls when glucose samples are written to Apple Health; delays can vary by app, version and phone settings, and writes can appear about three hours late.
The practical result: Apple Health is fine for looking back at a day, but it is not a live meter. Do not use Apple Health glucose values to decide whether a meal spiked you ten minutes ago, and never use them for insulin dosing. HealthOS is not a medical device and does not dose insulin; dosing decisions should follow clinician guidance.
How to get a full report from a Libre
The Libre route is a manual export.
- 1.On a computer, sign in at libreview.com with the account your Libre app uploads to.
- 2.Choose Download glucose data, complete the check, and save the .csv file.
- 3.Drop that file on the free browser CGM report linked at the end of this page.
The report is generated in your browser. No account, no upload. You get a 24-hour profile (AGP), time in range, GMI, variability, biggest rises and what happened overnight.
What if the data is already in Apple Health from Dexcom, Stelo or Lingo?
You can export Apple Health data and feed the same report. The tool accepts Apple Health export.zip, Dexcom Clarity, Stelo, Lingo and SiBionics exports. A proper report is more useful than scrolling Apple Health, because the HealthOS report computes AGP and time in range from the exported samples you provide.
What you will see in the report
The AGP lays every day on one 24-hour clock. The middle line is the median. The darker band holds the middle half of readings, and the lighter band holds 90 percent. A narrow band means your days look alike; a wide band means they vary. In Spartano et al. 2024, adults without diabetes spent about three hours a day above 140 mg/dL. That is not a diagnostic threshold. The 70 to 180 mg/dL time-in-range target comes from the International Consensus on Time in Range and was set for people with diabetes.
Short, sharp overnight dips that recover quickly are often compression lows: lying on the sensor presses the tissue around it and fakes a drop. If you see low readings you cannot explain or feel unwell, check with a finger-prick meter and talk to a doctor.
Run your own numbers at free CGM report: drop a LibreView, Dexcom Clarity, Stelo, Lingo or SiBionics export and see your AGP, time in range and biggest rises, in the browser, no account. HealthOS is pre-launch. The free reservation is for HealthOS Sensor at https://healthosx.com/glucose/sensor; no payment is taken, and the app or sensor cannot be downloaded, bought, or shipped yet. HealthOS is not a medical device and does not dose insulin. Join the free reservation list at https://healthosx.com/glucose/sensor.
Written by
HealthOS Research