Your own baseline, not a chart
Lintra compares each reading against the 28 days you actually lived, not a population average or a single bad night.
Health & Fitness
Lintra
What is wearing you down, on repeat?
Lintra reads the heart-rate-variability samples your Apple Watch already recorded, finds the ones that dipped below your own baseline from the preceding 28 days, and checks whether a recurring event on your calendar was there each time. When the pattern holds up across several weeks, Lintra names the candidate — for example, that your HRV dropped after Weekly Planning Sync in five of the six weeks it happened.
Only repeats earn a name
A stress-cause candidate is only named once your HRV dipped around the same recurring event in most of the weeks it happened — not once, not by coincidence.
Everything stays on this phone
The baseline, the dip detection, and the sentence describing a pattern are all computed on-device. No account, no sync, nothing uploaded.
A correlation, stated as one
Lintra never claims an event caused a drop in your HRV — only that the two coincided, and how often.
Not a medical device
Lintra does not diagnose, treat, or prevent any condition. What it shows is a correlation it observed between two things — never a cause stated as fact. Please don’t use it to make a medical decision; talk to a clinician instead.
Privacy
What Lintra reads from Health and Calendar, and why none of it leaves your phone.
→ 02Terms
The subscription, how to cancel it, and the limits of what Lintra can tell you.
→ 03Support
Why there’s no data yet, why no causes appear, and how to restore a purchase.
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