Histari — Privacy Policy

Effective date: July 1, 2026 · Flownaught LLC (California, USA)

Histari provides informational allergy and environmental insights. It is not a medical device and does not provide medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional about your health.

This Privacy Policy explains what information the Histari mobile app ("Histari," "we," "us") collects, how we use it, and the choices you have. By using Histari you agree to this policy.

Information we collect

Category	What	Why
Account information	Your name and email address, provided by Google when you choose to sign in.	To create your account and sync your data across devices.
Location	Your device's approximate and/or precise location, when you grant permission. You may also attach a location to a logged reaction.	To retrieve local pollen, air-quality, and weather forecasts for your area.
Health information	The allergy and symptom reactions you log (symptoms, severity, notes, medication taken), your optional allergy-test profile (e.g., RAST classes), and any food-reaction entries.	To show your history and personalize your trigger analysis and seasonal outlook.
Preferences	App settings such as notification times and feature toggles.	To operate the app the way you configured it.

If you use Histari as a guest (without signing in), your logs are stored only on your device and are not transmitted to us.

How your information is stored

When you sign in, your data is stored in Google Firebase (Cloud Firestore and Firebase Authentication), operated by Google LLC on our behalf. Data is encrypted in transit and at rest. Guest data remains on your device only.

Third-party services

To provide forecasts, Histari sends your location coordinates to the following providers solely to return the requested environmental data:

Google Maps Platform — Pollen API (pollen forecasts) and Places API (restaurant lookup for food-reaction logging).
Open-Meteo — air-quality, weather, and geocoding data.
Google Firebase — authentication and cloud storage.

We do not sell your personal information, and Histari contains no advertising.

Optional anonymized community reports

If you turn on "Contribute anonymized restaurant reports," then when you log a food reaction at a restaurant, Histari shares an anonymized report containing only the restaurant, dish, and suspected allergen — never your name, symptoms, severity, or any identifier — to help other users. This feature is off by default and can be turned off at any time in Settings.

Data retention and deletion

You are in control of your data. In the app you can delete individual logs, delete all of your data, or delete your account entirely, which removes your personal data from our systems. Anonymized community reports contain no identifying information and are not linked to you, so they are retained.

Children

Histari is intended for adults (18+) and is not directed to children. We do not knowingly collect personal information from children.

Security

We use industry-standard measures, including encryption in transit and at rest, to protect your information. No method of transmission or storage is 100% secure.

Your rights

Depending on where you live, you may have rights to access, correct, or delete your personal information. You can exercise the core of these rights directly in the app, or contact us for assistance.

Changes to this policy

We may update this policy from time to time. Material changes will be reflected by updating the effective date above.

Contact

Questions or requests: contact@flownaught.com, Flownaught LLC, California, USA.