Most answers are below. If something isn't working or you're not sure about it, email us — a real person reads every message.
[email protected] · usually a reply within one business day.
Email [email protected]. To help us answer quickly, include your iPhone model and iOS version, and a short description of what happened.
Please don't send health details — we don't need them to help, and your data is meant to stay on your device.
On first launch, Hermly walks you through connecting Apple Health and (optionally) your location for local pressure. If you skipped a permission, you can grant it later in Settings inside the app.
Patterns take a little while to emerge. For roughly the first two to three weeks, Hermly is still learning your baseline, so today's number may be modest or absent. Logging each attack when it happens makes the picture sharper.
The risk score is a pattern estimate built from your own history — sleep, heart rate variability, cycle, and local barometric pressure. It is a probability, not a diagnosis or a guarantee, and it is meant to inform your day, not to replace your judgment or your clinician's.
When Hermly doesn't have enough signal to be honest about a number, it shows a setup state rather than inventing one.
Your health data stays on your iPhone. Hermly keeps no server-side record of your attacks, pain levels, medications, or cycle. Optional iCloud sync is end-to-end encrypted with your own iCloud keychain — we can't read it.
Full detail is in our Privacy Policy.
Today's risk, attack logging, and your history are free, with no time limit. Hermly Pro unlocks the Doctor Report, Evidence Report, Apple Watch Attack Mode, and end-to-end encrypted iCloud sync. Pro is offered as a yearly plan with a 7-day free trial.
Billing and refunds are handled by Apple. See our Terms of use for the full subscription terms.
Hermly runs on iPhone with iOS 17 or later and reads from the Apple Health app. An Apple Watch is optional but improves the signals behind your risk score.
Hermly is not a medical device. It does not diagnose, treat, cure, or prevent migraine. It helps you see patterns in your own data and share them with the people who help you. For medical concerns, talk to a qualified clinician.