Privacy — Ephemeris Lab

Last updated: October 3, 2026

Your charts and notes

Ephemeris Lab stores your birth details, charts and notes on your computer. We do not receive or automatically back up your library. The app does not collect usage analytics or automatic crash reports, and does not require an account.

License keys are verified on your computer. The desktop app does not contact a license server.

Internet connections

If you choose online place search, the search service receives the place name you enter. Downloading planetary data also uses an internet connection. Your chart library and notes are not sent to those services.

These services receive ordinary connection information, such as your IP address. Images, backups and other exports are shared only through the services you choose.

This website

This site uses no analytics, advertising or tracking cookies. Cloudflare hosts the website and processes connection information to serve and protect it. Its security measures may involve cookies.

When you contact us

Your email address and message are kept so we can reply and continue the conversation. They are not added to a marketing list. Please use example chart data or obtain permission before sending another person’s birth details.

Purchases

This website does not collect payment-card details. FastSpring hosts checkout and processes the information entered there, including contact, payment, tax and order information, under its privacy policy.

To deliver and support a purchased license, we receive the purchaser’s name, email address, order identifiers, and purchase or refund status. We use those records for license delivery, support, reconciliation, and fraud or dispute handling. They do not include your chart library, payment-card number, or a record of your app usage.

We keep purchase and support information while needed for those purposes and applicable record-keeping requirements. We do not add buyers to a marketing list. You may ask for access, correction or deletion; information needed for legal obligations or unresolved disputes may need to be retained.

Questions or requests

Ephemeris Lab is operated by Kasra Rahjerdi in California, United States. To ask about this policy or request access, correction or deletion of information you have sent us, email hi@ephemerislab.app. We cannot access or delete the chart library on your computer.