Privacy Policy

Last Updated: July 19, 2025

1. Introduction

This privacy policy explains how Janus ("we", "us", "our") collects, uses, and protects your personal information when you use Janus (an AI flashcard generator).

By using Janus, you agree to the collection and use of information in accordance with this policy.

2. Information We Collect

Information You Provide

• Account Information: Email address, name, profile photo (via Google login)
• Your Content: Documents, PDFs, and resources you upload; highlights you create; flashcards generated from your content

Information We Collect Automatically

• Usage Data: Feature usage, flashcard creation frequency, document interactions
• Device Information: IP address, browser type, device type
• Analytics Data:
  • PostHog: To identify and fix bugs and poor user experiences
  • Google Analytics & Vercel Analytics: To understand website traffic

Information From Third Parties

• Google Authentication: Profile and account information when you sign in with Google
• Payment Information: Billing details via Stripe

3. How We Use Your Information

We use your personal information for the following purposes:

• To provide our service: Store your documents and generate flashcards using AI
• To communicate with you: Service updates, support responses, newsletters
• AI Processing: Send your documents to AI providers to generate flashcards
• To improve our service: Analyze usage patterns to enhance features
• To comply with law: Legal obligations

4. Information Sharing

We do not sell your personal data. We share your information only in these cases:

• Service Providers:
  • Supabase (authentication and database)
  • Google (authentication)
  • Stripe (payment processing)
  • Google Analytics, PostHog, Vercel Analytics (analytics)
  • Vercel (hosting)
  • AI Providers (OpenRouter) - process your documents to generate flashcards
  • Loops (email marketing and newsletters)
• Legal Requirements: When required by law
• Business Transfers: In case of merger or acquisition
• With Your Consent: When you explicitly agree

5. Data Storage and Security

• Location: United States (Ohio)
• Retention: We retain your data while your account is active. Upon account deletion request, we will delete your data within 30 days.
• Security: We use industry-standard security measures including HTTPS encryption, secure authentication, and protected cloud storage

6. Your Rights

Under GDPR, you have the right to:

• Access your personal data
• Correct inaccurate data
• Delete your data ("right to be forgotten")
• Export your data (data portability)
• Object to processing
• Restrict processing

To exercise these rights, contact us at cfo@janus.cards.

7. Cookies

We use:

• Essential cookies: For authentication and session management
• Analytics cookies: To understand how you use our service (Google Analytics, PostHog, Vercel Analytics)

8. Age Restrictions

Janus is not intended for children under 13 without parental consent. We do not knowingly collect data from children under these ages.

9. International Transfers

As we are based in the United Kingdom, data from EU users remains within adequate data protection standards. Data from other countries may be transferred to the UK for processing.

10. Changes to This Policy

We may update this policy from time to time. We will notify you of any material changes by email.

11. Contact Us

For any questions about this privacy policy or your personal data:

Email: cfo@janus.cards