Privacy policy
Migraine Diary for Android · package com.priadkin.migraine · last updated 22 September 2026
Migraine Diary is published by FOP Heorhii Priadkin (Ukraine), “we”. This policy explains what data the app handles. Short version: the app has no accounts and no cloud, your headache diary stays on your phone, and the ads are provided by Google.
Data that stays on your device
Your diary — headache entries, intensity, symptoms, triggers, medications and notes, the days you marked as headache-free — and your settings are stored only on your device. This is health information, and we never receive it: the app has no server and sends your diary nowhere. Uninstalling the app deletes it.
Notifications
If you turn on the evening check-in or the medication follow-up, the app asks for permission to show notifications and schedules them on your device. They are created and shown locally by Android; nothing is sent to us.
Doctor report
The PDF report is created on your device. It leaves your phone only when you choose to share it (for example by email or a messenger) — then the app you pick handles it under its own privacy policy.
Not a medical device
The app is a diary. It does not diagnose, treat or prevent any condition.
Advertising — Google AdMob
The free version shows ads served by Google AdMob. To show and measure ads, the Google Mobile Ads SDK may collect your device’s advertising ID, IP address, approximate location derived from it, device and app information, and ad interaction data. In the EEA, UK and Switzerland you are asked for consent before personalised ads are shown; you can change your choice at any time in the app under Settings → Privacy options. You can reset or delete your advertising ID in your Android settings. See how Google uses information from apps that use its services.
Purchases — Google Play and RevenueCat
If you subscribe to Pro, payment and renewals are handled by Google Play; we never see your payment details. You can cancel at any time in Google Play → Payments & subscriptions. We use RevenueCat to check whether your subscription is active. RevenueCat receives a random app user ID, the purchase receipt and basic device information. See the RevenueCat privacy policy.
What we don’t do
- No account, no sign-up, no email collected by the app.
- We don’t sell personal data.
- No access to your contacts, photos, files, microphone or precise location.
Children
The app is not directed at children under 13, and we do not knowingly collect data from them.
Your rights
Because we don’t store personal data on our servers, there is usually nothing for us to access or delete. For data held by Google or RevenueCat, use their tools linked above, or write to us and we will help.
Changes
If the app starts using a new service that handles data (for example crash reporting), this page will be updated before that version is released.