Privacy Policy

Last updated: 11 October 2026. This policy explains what data tellmydoctor.app (“the site,” “the app”) collects and how it's handled. It's operated by Stuart Mathieson, an independent developer, reachable at [email protected].

The short version

Your symptom data is stored only in your own browser's local storage. It is never sent to an application server. The site's hosting provider still receives ordinary connection metadata when you visit. There are no accounts, no logins, no analytics, no cookies, and no third-party scripts loaded on any page of this site.

What data exists, and where it lives

When you fill in patient details or log a symptom, that information is written directly to your browser's localStorage for this domain. It stays on your device - your phone, tablet, or computer. Anyone with access to this browser profile, or code running on this site, may be able to read it. Avoid shared devices or browser profiles for sensitive information.

If you turn on passphrase protection, your data is encrypted on-device using AES-256 before it's written to local storage. The passphrase itself is never transmitted anywhere; it only ever exists in your browser's memory while the app is open.

Exported files (PDF, CSV, or JSON backup) are generated entirely in your browser and saved directly to your device - they don't pass through any server either. Note that exported backup files are plain, unencrypted data even if passphrase protection is enabled in the app, so store and share them carefully.

Cookies and tracking

tellmydoctor.app does not use cookies, does not use analytics or telemetry of any kind, and does not track you across this site or any other. There is nothing here monitoring how you use the app.

Third-party services

As of this writing, tellmydoctor.app loads no third-party resources. Fonts and the PDF-export library are hosted directly on this site rather than fetched from an external CDN. Visiting the site still sends a request to its hosting provider, which may process connection metadata such as your IP address. Symptom entries are stored in your browser and are not included in those requests.

If that ever changes (for example, if advertising is added to support the site), this policy will be updated first to name the service, explain what data it collects, and link to its own privacy policy, and the “last updated” date above will change accordingly.

Your control over your data

Because everything lives in your browser, you are always in full control of it. You can export a backup at any time from the Data section of the app, and you can permanently delete all stored data by clearing your browser's site data for tellmydoctor.app, or by using the in-app delete/reset option. Nobody else needs to be asked, and nobody else can do it for you - there's no account to request deletion from.

Children's privacy

tellmydoctor.app does not knowingly collect personal information from anyone, of any age, because it does not collect personal information at all - everything stays on-device as described above.

Changes to this policy

If this policy changes, the update will be posted on this page with a new “last updated” date. Since there are no accounts or emails collected, we can't notify you directly - check back here if you want to stay current.

Questions

If anything here is unclear, or you have a privacy question not covered above, email [email protected].