Selene

Privacy Policy

Last updated: August 12, 2026

This Privacy Policy explains how Selina Feng LLC ("Selene," "we," "us") collects, uses, and protects your information when you use the Selene app and the Ask Selene feature. By using Selene, you agree to the practices described here.

Information we collect

  • Account information. You can use Selene without creating an account. We collect the name you enter during setup so the app can address you. If you choose to create an account to manage your subscription, we also collect your email address
  • Birth details. To calculate your natal chart, we collect your date of birth, time of birth, and place of birth. This information is used to generate your chart and your personalized moon readings.
  • Cycle information. If you use the cycle features (available with a subscription), we collect the cycle dates and related information you enter. You control whether to provide this; the core daily moon reading does not require it.
  • Conversation content. When you use Ask Selene (available with a subscription), we process the messages you send in order to generate responses (see 'Third-party AI services' below).
  • Usage information. We may collect basic app and device information to operate and improve the app. We do not use third-party analytics, advertising, or crash-reporting SDKs. Apple may collect standard App Store analytics as described in Apple's privacy policy.

How we use your information

We use your information to:

  • Calculate your natal chart and generate your daily moon readings
  • Provide the cycle features you opt into
  • Enable the Ask Selene conversational feature, available with a subscription
  • Maintain your account and provide support
  • Operate and improve the app

Third-party AI services

Ask Selene and your personalized readings are generated using third-party AI services. The messages you write in Ask Selene are sent to Google's Gemini API, along with relevant context derived from your chart and profile. Gemini puts Selene's readings into words; it acts as a processor only, and the interpretive framework and voice behind your readings are Selene's own. We use the paid Gemini API tier, under which Google is prohibited from using your data to train its models.

How your information is stored

Your data is stored using Supabase, which provides our backend and database services. Your information is protected by industry-standard encryption in transit and at rest, along with row-level security controls that restrict access to your own data. We do not apply additional application-level encryption beyond these protections. No method of transmission or storage is completely secure.

Sharing your information

We do not sell your personal information. We share information only:

  • Supabase, which provides our backend, database, and authentication services
  • Google (Gemini API), which puts Selene's readings into words
  • RevenueCat, which manages subscription status and entitlements. RevenueCat receives your account identifier and subscription transaction details in order to determine whether your subscription is active
  • If required by law, or to protect rights, safety, or property

Subscription payments are processed by Apple through the App Store. We never receive or store your payment card details.

Your choices and rights

You can:

  • Access or update your account and birth details in the app
  • Choose whether to provide cycle information
  • Delete individual logged periods at any time in Settings or the calendar view
  • Delete your account and all associated data at any time from Settings
  • Contact us with any privacy request at the address below

Data retention

We keep your information for as long as you use Selene. Ask Selene conversations are saved as threads so you can return to them later. When you delete your account, your profile, birth details, cycle information, and conversation history are deleted from our systems. Backup copies may persist for up to 30 days before being overwritten. Subscription records held by Apple and RevenueCat are retained according to their own policies.

Health-related and sensitive information

Some information you provide is sensitive, including your birth details and, if you use the cycle features, your cycle information (period dates, cycle length, and related personalization settings). This information is stored as described in "How your information is stored" above. Your cycle information is used to display your cycle history and calendar back to you and to personalize your readings, including responses from Ask Selene. Because your readings are generated using third-party AI services, information derived from your cycle and chart may be included in the data processed by those services. Selene's readings are for reflection and self-understanding and are not medical, psychological, or diagnostic advice.

Children

Selene is not intended for use by anyone under 18. We do not knowingly collect information from children under that age.

Changes to this policy

We may update this Privacy Policy from time to time. We will post the updated version here with a revised "Last updated" date.

Contact

If you have questions about this Privacy Policy or your information, contact us at:

hello@askselene.app
Selina Feng LLC
447 Sutter St Ste 405, San Francisco, CA 94108