Privacy policy

Last updated: 4 August 2026

This policy covers the Migraine Watch Android application (com.radami.migrainewatch). It explains what the app stores, what leaves your device, and what does not.

The short version

Migraine Watch has no server and no user accounts. Everything you record — your symptom log, your settings, your location — is stored on your device. The only things that ever leave it are your approximate coordinates, sent to a weather service to fetch a forecast, and a place name if you choose to search for one. There is no advertising, no tracking, and nothing is ever sold or shared for marketing.

What the app stores on your device

All of the following is held in the app's private storage on your phone:

Data	Why it exists
Symptom entries — date, severity, triggers, duration, how much relief you got, medication, and any notes you write	So you can review your history and see it against the weather. This is health information, and it is treated as the most sensitive thing the app holds.
Location — approximate coordinates, the place name, and the time zone	To request the forecast for where you are and show event times in local time.
Barometric pressure readings — past readings and the forecast for your location	To draw the charts and detect pressure events without re-fetching constantly.
Settings — your alert sensitivity and notification preference	To decide which pressure changes are worth telling you about.
A record of alerts already sent	So the same event is not announced to you twice.

What leaves your device

The app makes two kinds of network request, both to Open-Meteo:

Forecast and historical pressure. Sends your latitude, longitude, time zone and the date range being requested to api.open-meteo.com and archive-api.open-meteo.com.
City search. If you look up a place by name, the text you type is sent to geocoding-api.open-meteo.com to turn it into coordinates.

These requests carry no account identifier, no device identifier and no advertising ID, because the app does not have any. Your symptom log is never transmitted anywhere. It is not sent to Open-Meteo, to the developer, or to anyone else.

Open-Meteo is an independent weather service and receives the coordinates described above along with your IP address, as any web request would carry. Their handling of that is covered by Open-Meteo's own terms and privacy statement.

Android backup

The app allows Android's standard backup, which means your app data — including your symptom log — may be copied to your own Google Drive backup if you have Android backup switched on for your device. That backup belongs to your Google account and is governed by Google's privacy policy, not by this one. The developer has no access to it.

The same applies when you transfer your data directly to a new phone during setup. You can turn cloud backup off for all apps in your device settings, usually under System → Backup.

Permissions the app uses

Two of these are put to you as a request you can refuse. The other two Android grants automatically when the app is installed, with no prompt, because they cannot expose anything personal on their own.

Asked for, and refusable

Approximate location — used only to work out which forecast to fetch. The app never requests precise location. You can decline it and enter a city by name instead.
Notifications — to deliver the pressure warnings that are the point of the app. Declining it leaves everything else working.

Granted at install, without a prompt

Internet — to fetch weather data.
Run at startup — so the background check that fetches forecasts resumes after your phone restarts.

What the app does not do

No user accounts, sign-in or profile.
No tracking of any kind.
No advertising, and no advertising identifiers.
No third-party SDK that collects data for its own purposes. The app uses Google Play Services only to read the device's own location when you allow it.
No selling or sharing of personal information. There is no data to sell.

How long data is kept, and how to delete it

Data stays on your device until you remove it. Symptom entries persist until you delete them in the app. Stored pressure readings build up as the app fetches forecasts and are not deleted on a schedule; they are weather measurements for your area rather than anything about you. The record of which alerts have already been sent is discarded after 30 days.

To erase everything, uninstall the app, or use Settings → Apps → Migraine Watch → Storage → Clear data. Because nothing is held on a server, that is genuinely all of it. If you have Android backup enabled, remember to remove the backup from your Google account as well.

Children

Migraine Watch is not directed at children under 13, and it does not knowingly collect information from them. It has no sign-up, so it does not gather age or identity information from anyone.

Your rights

Depending on where you live, you may have rights to access, correct, export or erase your personal data. Because all of your data is on your own device and the developer holds none of it, most of these you exercise directly: view and correct entries in the app, and erase them there or by clearing the app's data. If you contact the developer for a copy of your data, there is nothing to send — none of it is held. The app does not currently offer a way to export your log to a file.

Changes to this policy

If the app's data handling changes, this page will be updated and the date at the top revised. Material changes will also be noted in the app's release notes.

Contact

Questions about this policy: radami.contact@gmail.com