Privacy Policy

Last updated: January 22, 2026

Introduction

Welcome to Danu. We take your privacy seriously. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our mobile application and web service. Please read this policy carefully. By using Danu, you agree to the collection and use of information in accordance with this policy.

Information We Collect

Personal Information You Provide

  • Account Information: Email address, display name, and password when you create an account.
  • Birth Data: Date, time, and location of birth for you and any individuals you add to your circle. This is essential for calculating accurate astrological charts.
  • Chat History: Conversations with Danu (our AI guide) to provide personalized guidance and maintain context across sessions.
  • Payment Information: When you subscribe to a paid plan, payment processing is handled by Stripe. We do not store your full credit card details.

Information Collected Automatically

  • Usage Data: How you interact with the app, features used, and preferences selected.
  • Device Information: Device type, operating system, and browser type for optimization purposes.

How We Use Your Information

  • Chart Calculations: Your birth data is used to calculate precise natal charts, transits, and returns using Swiss Ephemeris.
  • AI Personalization: Your chart data and conversation history help Danu provide relevant, personalized astrological guidance.
  • Daily Insights: We generate personalized daily insights based on current planetary transits to your natal chart.
  • Relationship Analysis: Birth data for circle members enables synastry (compatibility) calculations.
  • Service Improvement: Anonymous usage patterns help us improve the app experience.
  • Communication: We may send you service-related emails about your account, features, or important updates.

Data Storage and Security

Your data is stored securely in our PostgreSQL database hosted by Neon (neon.tech), a secure cloud database provider. All data is encrypted in transit using TLS/SSL and at rest using AES-256 encryption.

We implement appropriate technical and organizational measures to protect your personal data against unauthorized access, alteration, disclosure, or destruction.

Third-Party Services

We use the following third-party services to operate Danu:

  • Anthropic (Claude AI): Powers Danu's conversations and interpretations. Your chart data and messages are sent to Anthropic's API to generate responses. Anthropic does not use this data to train their models.
  • Stripe: Handles payment processing for subscriptions. Stripe's privacy policy governs their handling of payment information.
  • Neon: Hosts our database infrastructure with enterprise-grade security.
  • Mapbox: Provides geocoding for birth location search. Only the location query is sent, not personal identifying information.
  • Vercel: Hosts our web application with industry-standard security practices.

Data Retention

We retain your personal data for as long as your account is active or as needed to provide you services. If you delete your account, we will delete your personal data within 30 days, except where we are required to retain it for legal or business purposes.

Your Rights

You have the following rights regarding your personal data:

  • Access: Request a copy of the personal data we hold about you.
  • Correction: Request correction of inaccurate personal data.
  • Deletion: Request deletion of your personal data and account.
  • Export: Request a portable copy of your data.
  • Opt-out: Unsubscribe from marketing communications at any time.

To exercise these rights, contact us at privacy@danuastro.com.

Children's Privacy

Danu is not intended for children under 13 years of age. We do not knowingly collect personal information from children under 13. If you are a parent or guardian and believe your child has provided us with personal information, please contact us so we can delete such information.

International Users

If you are accessing Danu from outside the United States, please be aware that your information may be transferred to, stored, and processed in the United States where our servers are located. By using our service, you consent to this transfer.

Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page and updating the "Last updated" date. You are advised to review this Privacy Policy periodically for any changes.

Contact Us

If you have any questions about this Privacy Policy, please contact us:

  • Email: privacy@danuastro.com
  • Website: danuastro.com

© 2026 Danu. All rights reserved.