Privacy Policy
How we collect, use, and protect your personal information
Information We Collect
When you use SynastryChart, we may collect the following types of information:
- Birth Information: Date, time, and location of birth for astrological calculations
- Usage Data: IP address, browser type, pages visited, and interaction data
- Cookies & Local Storage: Session data, preferences, and authentication tokens
How We Use Your Information
We use the collected information for:
- Generating accurate synastry charts and astrocartography maps
- Improving our services and user experience
- Analyzing usage patterns to enhance functionality
- Complying with legal obligations and protecting our rights
IMPORTANT: We do NOT sell, share, or distribute your personal birth information to third parties for marketing purposes.
Data Storage & Security
We take data security seriously:
- Session Data: Charts are stored temporarily in your browser session
- Encryption: All data transmission uses industry-standard encryption (HTTPS/TLS)
- Third-Party Security: We use Vercel (hosting) and Mapbox (maps), both compliant with data protection standards
- No Long-Term Storage: Guest users' birth data is not permanently stored on our servers
Third-Party Services
SynastryChart integrates with the following third-party services:
Mapbox (Map Rendering)
Used for displaying interactive astrocartography maps. Mapbox may collect usage data. Mapbox Privacy Policy
Vercel (Hosting & Analytics)
Our hosting provider. Vercel collects basic analytics and performance data. Vercel Privacy Policy
Your Rights (GDPR & CCPA Compliance)
You have the right to:
- Access: Request a copy of your personal data
- Correction: Request corrections to inaccurate data
- Deletion: Request deletion of your personal data ("Right to be Forgotten")
- Data Portability: Request your data in a machine-readable format
- Consent Withdrawal: Withdraw consent for data processing at any time
To exercise these rights, contact us at support@synastrychart.org
Cookies & Tracking
We use cookies for:
- Essential Cookies: Required for site functionality (authentication, session management)
- Analytics Cookies: Track usage patterns (Vercel Analytics)
- Preference Cookies: Remember your settings (theme, language)
You can disable cookies in your browser, but this may limit site functionality.
Children's Privacy
SynastryChart is not intended for children under 13. We do not knowingly collect data from minors. If you believe we have collected a child's data, please contact us immediately.
Data Retention
- Guest Users: Birth data is stored only for the session duration and deleted when the browser is closed
- Registered Users: Birth data is retained until account deletion or chart removal
- Analytics Data: Aggregated usage data is retained for up to 24 months
International Users
SynastryChart is accessible worldwide. By using our service, you consent to data transfer and processing in the United States and other jurisdictions where our service providers operate.
Changes to This Privacy Policy
We may update this Privacy Policy periodically. Changes will be communicated via:
- Posting the updated policy on this page
- Updating the "Last Updated" date
- For significant changes: Email notification to registered users
Contact Us
For privacy-related questions or requests, contact us at:
Last Updated: January 5, 2026