Support
Email [email protected]. Below are the questions that come up most.
Calmline needs at least three days with usable Heart Rate Variability readings before it will show a number. It deliberately will not guess from less. Wear your watch — including overnight, if you are comfortable doing so — and the score will appear.
This is the most common issue, and it is not the app. Apple Watch records HRV on its own schedule — often only every few hours. Calmline can only score what watchOS has recorded.
To give it more to work with:
After a short night, low REM sleep or disturbed breathing, Calmline lowers that day’s alert threshold — you have less headroom, so it speaks up sooner. It never raises the threshold above what you set. When this happens, the reason is shown on the watch face card and in Settings → Recovery.
The card promotes itself only when your score crosses your threshold. Below that it stays in its normal position by design. Note that watchOS treats widget relevance as a strong hint rather than a guarantee, and it also weighs your own usage patterns.
Add Breathe to Control Center, or assign it to the Action button on Apple Watch Ultra. One press starts a haptic-guided session with the screen dimmed, so you can run it discreetly.
Settings → Export as CSV or JSON on iPhone. The export includes timestamps, scores, bands and the scoring formula, so it is readable without Calmline.
Settings → Clear Stress History removes Calmline’s local log. Deleting the app removes everything it stored. Neither affects data in Apple Health, which you control in Health → Sharing → Apps.
On iPhone: Settings → your name → Subscriptions → Calmline. There is also a direct link in the app under Calmline Plus. Deleting the app does not cancel it.
Email [email protected] with your watch model and watchOS version and we will get back to you.
Calmline