Privacy Policy
Last updated: 5 August 2026
Whyismigraine does not collect anything. There is no account, no sign-up, and no server. Everything you log stays in a file on your phone. We cannot see it, because there is nowhere for it to go.
This policy is longer than that only because “we collect nothing” is a claim worth spelling out — especially for a neurological condition, which is nobody else's business.
What we collect
Nothing. We have no servers, so there is no system anywhere that receives your data.
Specifically, Whyismigraine does not collect, transmit, sell, or share:
- your exposures and attacks, or any notes, triggers, times, or grades attached to them
- your name, email address, phone number, or any other identifier
- your location
- your contacts, photos, calendar, or files
- advertising identifiers or device fingerprints
- analytics, usage statistics, session recordings, or crash reports
There is no analytics SDK, no advertising SDK, no crash-reporting SDK, and no attribution SDK in this app. We have deliberately not added one, and we do not intend to. Google Play's own console tells us how many people installed the app; that is all the measurement we get and all we want.
Where your data lives
On your device, in two places:
- A database file holding everything you log. It is stored in Whyismigraine's private app storage, which Android keeps isolated from other apps.
- A small settings store for preferences — things like which view you last used, and whether you switched the app out of its dark default.
Both are removed when you uninstall the app.
Device backups
If you have Android's automatic backup switched on for your Google account, the operating system may include Whyismigraine's data in your device backup, the same way it does for other apps. That backup is made by Android, sent to your own Google account, and governed by Google's privacy policy — not by us. It exists so that your diary survives getting a new phone.
We never receive that backup and cannot read it. If you would rather it did not happen, you can turn backups off for this app in Android's Settings, under System → Backup.
This is the one way your data can leave your device without you choosing to send it, so it is worth knowing about.
Sharing and exporting
You can export everything you have logged as a JSON or CSV file. When you do, Android's share sheet hands that file to whatever app you pick — email, cloud storage, a messaging app, a file manager.
Once a file leaves Whyismigraine that way, it is subject to the privacy policy of wherever you sent it, not this one. Export files contain your complete diary. Treat them accordingly.
Internet access
Whyismigraine makes no network requests. It works identically in airplane mode.
The app does declare Android's INTERNET permission,
because the framework it is built with (React Native) requires it in
order to run. Nothing in Whyismigraine uses it. You can verify this
the same way we do: there is no network client anywhere in the source.
Payments
If you buy Whyismigraine, the purchase is handled entirely by Google Play. Google processes the payment and tells the app whether a purchase exists. We never see your card details, billing address, or Google account. Google's handling of that transaction is covered by Google's privacy policy and the Google Play Terms of Service.
Children
Whyismigraine is a general-purpose diary and is not directed at children. Because it collects no personal data from anyone, no data is collected from children either.
Your rights
Because we hold none of your data, the usual data rights — access, correction, portability, erasure — are not requests you need to make to us. You already have all of them, directly, inside the app:
- Access and portability: export a full backup as JSON or CSV at any time.
- Erasure: “Delete all my data” in the app's Data screen erases everything on the device permanently. Uninstalling does the same.
- Correction: edit or delete any individual entry.
If you are in the UK, EU, or another region with data-protection law, there is no data controller relationship to enforce against us, because we never receive your data in the first place.
Changes to this policy
If this policy changes materially, the date at the top changes with it, and the updated version is published at https://whyismigraine.makektm.com/privacy.html. Because the app links to the hosted copy rather than embedding one, you always see the current version.
Contact
Questions about this policy: support@makektm.com
Whyismigraine is not a medical device and does not diagnose, treat, cure, or prevent any medical condition. It shows you patterns in what you chose to log — nothing more. Always consult a qualified healthcare professional for medical advice, diagnosis, or treatment.