Privacy Policy
Migraine Tracker by Throbly · Effective November 6, 2026
The short version: what you log stays on your device. Throbly has no accounts, no ads, and no tracking, and we never sell or share your information. If you choose to back up, the backup goes to your own Google Drive, not to us.
What the app stores, and where
Everything you enter, including migraine episodes, symptoms, pain levels, medications, procedures, refills, and your lists, is saved only in your web browser's storage on your device. We do not run a server that receives or keeps this information, and we cannot see it.
Optional Google Drive backup
If you tap Back up to Google Drive, you sign in with your Google account and give the app permission to see, create, and change only the files it creates in your Drive (the Google permission called drive.file). The app uses this to save and read one file, Migraine-Logger-backup.json, in your own Drive. It cannot see your other files.
- The backup travels directly between your device and Google. It never passes through us.
- Google's sign-in permission is kept on your device for about an hour so repeat backups don't ask again, then it expires.
- Throbly's use and transfer of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements.
What we don't do
- No advertising, analytics, or tracking tools.
- No selling, renting, or sharing of your information with anyone.
- No accounts or sign-up. Google sign-in is used only for the optional backup.
Services the app relies on
- Cloudflare hosts the app. Like any website host, it may briefly process technical details such as your IP address to deliver the app securely. See Cloudflare's privacy policy.
- Google provides sign-in and Drive for the optional backup, and one font used in the app is loaded from Google Fonts. See Google's privacy policy.
Deleting your data
- In the app: Settings → Erase all data removes everything from your device.
- Uninstalling the app or clearing your browser's data for this site also removes it.
- To remove a backup, delete Migraine-Logger-backup.json from your Google Drive.
- To remove the app's Drive permission, visit your Google Account's third-party connections.
Children
Throbly is not directed to children under 13 and does not knowingly collect information from them.
Medical disclaimer
Throbly is a tracking tool and does not provide medical advice. Always talk with your doctor about your treatment.
Changes to this policy
If this policy changes, the updated version will be posted on this page with a new effective date.
Credits
The brain in the app icon is from Twemoji, licensed under CC-BY 4.0.
Contact
Questions about privacy? Email support@throbly.app.