Subscriptions are tied to the store account you subscribed with: your Apple ID on iPhone, or your Google account on Android. If Premium doesn't appear after reinstalling or switching devices, open Profile → Premium → Restore purchases. Make sure your phone is signed in to the same Apple ID or Google account you used to subscribe.

Yes. MyGrain works fully without an account: your entries are kept in an anonymous session on your device. If you create an account later, all your data is merged into it automatically.

Install MyGrain and sign in with the same account you used before. Your migraine history syncs from the cloud automatically (data recovery on new devices requires an account).

Check that notifications are allowed for MyGrain in your phone's settings, and that the reminder is enabled inside the app (Profile → Notifications). Focus modes and battery savers can also silence notifications.

Go to Profile → Notifications: there is one switch for the migraine news and one for the pressure-drop alert, all off by default. For the news you can also choose which kinds you want to hear about. You can also silence them in your phone's settings.

Open Profile → Medical appointments and add the date and time, the specialty and, if you want, the doctor, the place and the questions you want to ask. MyGrain can remind you 1 week, 1 day and 2 hours before, and from the appointment you can prepare a report for the visit. Appointments are free.

In Reports, the table icon at the top exports your whole diary as a CSV file, free of charge. The PDF report for your doctor is part of Premium.

In Profile → Notifications, Premium users can switch on a personal pressure alert. It is calculated on your phone from your diary and the public forecast for your weather area, so your health data never leaves the phone, and while it is on it replaces the standard alert. You can adjust its sensitivity and the time.

MyGrain looks up the weather for the city you set in Settings and relates it to your episodes. This does not use your device's location — only the city you enter — and you can stop it at any time by clearing the city in Settings.

Subscriptions are managed by the store you subscribed through. On iPhone, open Settings → your name → Subscriptions and select My Grain Premium; cancel at least 24 hours before the end of the current period, or it renews automatically. On Android, open the Google Play app, tap your profile picture, go to Payments & subscriptions → Subscriptions, select MyGrain and tap Cancel subscription; it stops renewing at the end of the current period.

You can permanently delete all your data at any time from Profile → Delete account. This removes your migraine history, treatments, habits and feedback from our servers, as required by the GDPR. See the privacy policy for details.

No. Your data is stored securely, is never sold and is never used for advertising; the only companies that handle it are the service providers that run the app, such as Google Firebase. Read the full privacy policy.