Privacy Policy

1. Introduction

Skai Line ("we", "us", or "our") operates DDforDD ("the Service"). This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use the Service. By using DDforDD, you consent to the practices described in this policy.

2. Information We Collect

We collect the following categories of information:

• Account information: Email address, name, and profile details provided during registration or OAuth sign-in.
• Usage data: Pages visited, pathways browsed, search queries, and interaction patterns within the Service.
• Favorites and preferences: Saved pathways, drugs, or diseases you mark as favorites.
• Notification preferences: Your choices regarding email notifications and alerts.
• Payment information: Processed exclusively by Stripe. We do not store credit card numbers on our servers.

3. How We Use Your Information

• Authentication: To create and manage your account, verify your identity, and maintain session security.
• Personalization: To provide features such as favorites, watchlists, and personalized dashboard views.
• Email notifications: To send you alerts about pathway updates, drug approvals, clinical trial changes, and other content you subscribe to.
• Service improvement: To analyze usage patterns and improve the Service's features, performance, and content.
• Billing: To process subscription payments and manage your account tier.

4. Third-Party Services

We use the following third-party services to operate DDforDD. Each has its own privacy policy governing how it handles your data:

• Stripe - Payment processing. Stripe handles all credit card and billing data.
• Google - OAuth authentication. Used for social sign-in.
• Neon - Database hosting. Stores account data and application state.
• Vercel - Application hosting and serverless functions.
• Resend - Transactional and notification email delivery.

5. Cookies

We use cookies for the following purposes:

• Session cookies: Essential for authentication. These cookies maintain your logged-in state and expire when your session ends or after a set period.
• Cross-domain authentication: We use cookies scoped to the .skai-line.com domain to enable shared authentication across Skai Line services (e.g., DDforDD, Materials Intelligence). These cookies contain a JWT token and do not track you across third-party sites.

We do not use advertising or analytics tracking cookies.

6. Data Retention

We retain your account information for as long as your account is active. Usage data is retained in aggregate form for service improvement. If you delete your account, we will remove your personal data within 30 days, except where retention is required by law or for legitimate business purposes (e.g., fraud prevention, billing records).

7. Your Rights

Depending on your jurisdiction, you may have the following rights regarding your personal data:

• Access: Request a copy of the personal data we hold about you.
• Deletion: Request that we delete your account and associated personal data.
• Export: Request a machine-readable export of your data.
• Correction: Request correction of inaccurate personal data.

To exercise any of these rights, contact us at legal@skai-line.com. We will respond within 30 days.

8. Children's Privacy

DDforDD is not intended for use by individuals under the age of 13. We do not knowingly collect personal information from children under 13. If we become aware that we have collected data from a child under 13, we will take steps to delete it promptly. If you believe a child under 13 has provided us with personal information, please contact us at legal@skai-line.com.

9. Changes to This Policy

We may update this Privacy Policy from time to time. We will notify registered users of material changes via email. The "Effective date" at the top of this page indicates when the policy was last revised. Continued use of the Service after changes constitutes acceptance of the revised policy.

10. Contact

If you have questions about this Privacy Policy, please contact us at legal@skai-line.com.