Sharing with Apple Health / Health Connect
Vitality Tracker can publish your glucose to your phone’s health store, so your other apps can read it. This fills a real gap: Abbott’s LibreLink app does not write to Apple Health or Health Connect at all. That is why many Libre users end up running a third app purely to bridge the two. If Vitality Tracker is already collecting your readings, it can do that job.Turning it on
Menu → Settings → CGM Integration → Share with Apple Health (Share with Health Connect on Android). Tap it, grant the permission your phone asks for, and it publishes immediately — telling you how many readings went. After that it tops up automatically.It publishes whatever CGM you use
Not just Libre. Anything that reaches Vitality Tracker — a Libre, an Ottai, an xDrip bridge, even readings you typed in by hand — is eligible.Why the spacing is 15 minutes
Vitality Tracker holds your readings at up to two-minute density. It publishes to the health store at fifteen-minute spacing. That is deliberate.The health store is a sharing surface, not the record
The health store is a sharing surface, not the record
Apps reading from Apple Health want your current picture, not a
minute-by-minute trace. Fifteen minutes is the FreeStyle Libre’s own historic
recording interval — the cadence the sensor itself considers meaningful — so it
is a resolution with a real basis rather than a number picked to save space.
On iPhone, every sample written is permanent
On iPhone, every sample written is permanent
Apple Health has no way for an app to replace or de-duplicate a sample it
previously wrote. Once it is in, it is in — the only removal is you deleting
the app’s whole history by hand.A fortnight at full density is about 5,700 samples. At fifteen-minute
spacing it is about 1,340. Given the writes are irreversible, the lighter
option is the respectful one.
Your full-density data is still here
Your full-density data is still here
Nothing is thrown away. The Live Dashboard, your averages, time in range,
HbA1c estimate and the alert rule all use every reading Vitality Tracker holds.
Only what is published outward is thinned.
What the readout means
Under the row you will see something like:
A first publish can be a few thousand readings, so it works in batches and
carries on in the background. Tapping the row again publishes until it is done.
Units
Readings are stored in mmol/L by Vitality Tracker and converted on the way out, because both health stores expect mg/dL through this route. Your phone then displays them in whichever unit you have set. 106 mg/dL and 5.9 mmol/L are the same reading — if the number looks unfamiliar, check which unit the reading app is showing.If you already run another bridge
If a bridge app (Sweet Dreams, Shuggah, Glucose Buddy and similar) is already writing your Libre readings to Apple Health, and you now switch Vitality Tracker on as well, both sets appear. Apple Health keeps them separate by source rather than merging them, so you will see the same readings twice, attributed differently. Nothing breaks, but it is untidy. Either stop the other app writing, or leave Vitality Tracker’s sharing off — whichever you prefer. Apple Health can delete one source’s data wholesale under that app’s entry, though that is irreversible.Next
How it works
Density, sensor life, and what happens when the app is closed
Alerts
High, low and sensor warnings