Summary
- Headmon does not require an account.
- Headmon does not operate a cloud diary or synchronization service.
- Headmon does not include advertising, tracking, third-party analytics or a developer-operated crash-reporting service.
- Diary entries are not sent to the Headmon developer.
- Optional weather features send approximate coordinates to Open-Meteo. No diary content accompanies those requests.
Information stored on your device
Headmon can store diary days, headache and migraine episodes, symptoms, pain levels, medicines, triggers, stress levels, notes, photos, weather context, custom catalog entries, reminders and app preferences. This information is stored locally in the application’s private storage and shared app-group storage needed by Headmon’s own widgets, controls and Live Activities.
Headmon does not transmit this diary information to the developer. Deleting the app removes its private application data, subject to the operating system’s normal deletion behavior. Headmon also provides controls for deleting individual days and resetting all diary data.
Exports, imports and backups
JSON, CSV and PDF files are created only when you request them. Automatic JSON backup is optional and writes to a folder you select through the system Files interface. The folder may be on the device or managed by a file provider such as iCloud Drive, depending on your choice and system settings. Headmon does not operate or receive data from that storage.
Exported files can contain sensitive health information. Photos are not included in the portable JSON archive, but remain private files inside Headmon unless you explicitly share or copy them. Deleting Headmon does not delete export or backup copies stored elsewhere.
Optional location and weather
When you enable weather on iOS, the system may provide a location while Headmon is in use. Apple Maps is used for place search and location labels. Before requesting weather, the iOS app reduces latitude and longitude to two decimal places—roughly weather-area precision—and sends those approximate coordinates to Open-Meteo over HTTPS. iOS place-search text and diary content are not sent to Open-Meteo.
The privately distributed Android app currently uses Open-Meteo for both manual place search and weather. On Android, a manual search sends the entered place text to Open-Meteo, and a weather request sends the selected location coordinates. Diary content is not included in either request.
Open-Meteo states that its free API may retain server logs containing IP addresses and geographic coordinates for technical maintenance, misuse prevention and troubleshooting, and that those logs are deleted after 90 days. Those records are controlled by Open-Meteo, not Headmon. Read the Open-Meteo terms and privacy information.
Weather is optional. You can disable location access, diary weather, background weather history and pressure alerts in Headmon and iOS Settings. Headmon does not request background location permission.
Photos, camera and notifications
Camera and Photos access is used only when you choose to attach a picture. Notification permission is used for reminders, active-episode actions and alerts you enable. Headmon does not upload photos or notification content to a developer service. Content displayed on the Lock Screen remains subject to the notification privacy settings you choose in iOS or Android.
Apple, Google and operating-system services
Installing through an app store, using TestFlight, opening system maps, selecting files, receiving notifications, or using device backup may involve Apple, Google or a selected file provider processing information under its own terms. Headmon does not receive their account, purchase or store-analytics data through the app.
Website and support
This website is hosted by GitHub Pages. Headmon does not add analytics, advertising or tracking cookies to it, although GitHub may process technical request information under the GitHub Privacy Statement.
Email sent to headmon@proton.me is handled through Proton. GitHub Issues are public. Never post a Headmon JSON, CSV or PDF export, private photo, medical record, address or other sensitive information in a public issue.
Changes and contact
This policy will be updated if Headmon’s behavior changes. Material changes will be dated on this page. For privacy questions, email headmon@proton.me.