Privacy Policy
Last updated: March 2026
1. Introduction
Welcome to IdolSaju, operated by Devin Lemcke Capital UG (haftungsbeschränkt), Bahrenfelder Kirchenweg 36, 22761 Hamburg, Germany (HRB 171035, Amtsgericht Hamburg). We respect your privacy and are committed to protecting your personal data. This privacy policy explains how we collect, use, and safeguard your information when you use our Saju astrology platform, which provides personalized readings based on authentic Korean Saju (사주) traditions.
2. Information We Collect
We collect the following types of information:
- Account Information: Email address and name for authentication (via Magic Link or Google OAuth)
- Birth Data: Date and time of birth for Saju calculations
- Preferences: Your gender, selected idols, and reading preferences
- Usage Data: How you interact with our service, including readings accessed and credits used
- Payment Information: Processed securely through Stripe (we do not store card details)
- Push Notification Data: Subscription endpoint and keys if you opt in to push notifications
- Uploaded Content: Profile images you upload to your account
3. How We Use Your Information
Your data is used to:
- Calculate your Saju profile, compatibility scores, and personalized readings
- Generate personalized fortunes, horoscopes, and cosmic insights
- Process Stardust credit purchases
- Send push notifications (only with your explicit opt-in)
- Improve our service and user experience
4. Data Storage & Security
Your data is stored securely using industry-standard encryption. We use PostgreSQL databases hosted on secure cloud infrastructure. Payment data is handled entirely by Stripe and never stored on our servers.
5. Your Rights (GDPR)
Under GDPR, you have the right to:
- Access your personal data
- Correct inaccurate data
- Request deletion of your data
- Export your data in a portable format
- Withdraw consent at any time
6. Cookies
We use essential cookies for authentication and session management. We do not use third-party tracking cookies. Analytics data is collected anonymously.
7. Third-Party Services
We use the following third-party services:
- Stripe: Payment processing for Stardust credit purchases
- Google: OAuth authentication and content generation (Gemini)
- Resend: Magic Link email authentication
- Neon: Database hosting (PostgreSQL)
- Vercel: Hosting and analytics
8. Contact Us
For privacy-related questions or to exercise your rights, use our contact form and select the Privacy / Data topic.