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Privacy Policy

Your health data deserves care.

This Privacy Policy explains how Hashi collects, uses, stores, and protects your information when you use the Hashi app and related website.

Last updated: April 13, 2026
Important medical note Hashi is intended for personal wellness tracking and educational purposes only. It does not provide medical advice, diagnosis, or treatment, and it is not a substitute for a licensed physician or other qualified healthcare professional.

1. Information We Collect

Depending on how you use Hashi, we may collect the following categories of information:

  • Account information, such as your email address or login details.
  • Profile information you choose to provide.
  • Health and wellness entries you manually input, such as symptoms, lab values, medications, supplements, habits, notes, and other thyroid-related tracking information.
  • Technical information, such as device type, app version, crash logs, diagnostics, and general usage analytics.
  • Purchase or subscription information related to premium features, where applicable.

2. How We Use Information

We use your information to:

  • Provide, maintain, and improve Hashi and its features.
  • Store and display the health and wellness information you choose to track.
  • Generate summaries, insights, exports, or visualizations based on your entries.
  • Support subscriptions, customer service, troubleshooting, and app performance.
  • Monitor reliability, prevent misuse, and maintain security.
  • Comply with legal obligations when required.

3. Health and Sensitive Data

Some information you enter into Hashi may be considered sensitive personal information or health-related information. We treat this data with heightened care.

Hashi is designed to help users organize and review personal wellness information. Any summaries, insights, trends, highlights, or exported reports generated by the app are informational only and should not be relied upon as medical advice or as a clinical decision-making tool.

You are responsible for deciding what information you enter into the app and whether to share any exported material with a clinician or other third party.

4. How Information Is Shared

We do not sell your personal information. We may share limited information only in the following situations:

  • With service providers who help operate the app, such as hosting, analytics, authentication, or subscription infrastructure providers.
  • When you request an action that requires sharing, such as exporting your data or connecting a third-party service.
  • When required by law, subpoena, court order, or similar legal process.
  • To protect rights, safety, security, or prevent fraud, abuse, or technical issues.
  • In connection with a merger, acquisition, financing, or sale of some or all business assets, subject to applicable law.

5. Data Retention

We retain personal information for as long as reasonably necessary to provide the app, fulfill the purposes described in this policy, comply with legal obligations, resolve disputes, and enforce agreements.

If you delete your account or request deletion, we will take reasonable steps to delete or de-identify your information, subject to legal, security, backup, fraud-prevention, or operational retention needs.

6. Security

We use reasonable administrative, technical, and organizational safeguards intended to protect your information. However, no method of storage, transmission, or security is completely guaranteed. You use the service at your own risk and should keep your device and login credentials secure.

7. Your Rights and Choices

Depending on your location, you may have rights to:

  • Access certain personal information we hold about you.
  • Request correction of inaccurate information.
  • Request deletion of certain personal information.
  • Withdraw consent where processing is based on consent.
  • Request a copy of your data where applicable.

To make a request, contact us using the email listed below. We may need to verify your identity before completing certain requests.

8. Children’s Privacy

Hashi is not intended for children under 13, and we do not knowingly collect personal information from children under 13. If you believe a child has provided personal information through the app, please contact us so we can review and delete it where appropriate.

9. Changes to This Policy

We may update this Privacy Policy from time to time. If we make material changes, we may revise the “Last updated” date and take additional steps where required by law. Your continued use of Hashi after changes become effective means the updated policy will apply.

10. Contact

If you have questions about this Privacy Policy or want to submit a privacy-related request, contact us at:

privacy@hashiapp.org