Privacy Policy
Last updated: February 2026
1. Information We Collect
Account data: Name, email address, and password hash when you sign up.
Uploaded content: PDF textbooks you upload for processing.
Generated materials: Summaries, flashcards, key concepts, and quiz questions created by our AI from your textbooks.
Payment data: Processed securely by Stripe. We never store your full card number.
Analytics: We use Google Analytics to understand traffic patterns. No personally identifiable information is shared.
2. How We Use Your Data
We use your data to provide and improve the service, process payments, send transactional emails (confirmations, password resets), and prevent abuse. We do not sell your data to third parties.
3. Third-Party Services
We use the following third-party services to operate:
- Supabase — authentication, database, and file storage
- Stripe — payment processing
- OpenRouter & AI providers — text processing to generate study materials from your uploaded PDFs
- Google Analytics — usage analytics
Your uploaded PDFs and extracted text are sent to AI providers for processing. Please review their privacy policies for details on their data handling.
4. Data Storage & Security
Uploaded PDF textbooks are stored in Supabase storage. Generated study materials (summaries, flashcards, concepts, quizzes) are stored in our database. All connections are encrypted via TLS/SSL.
5. Data Retention
Your data — including uploaded PDFs, generated study materials, and account information — is retained until you delete your account. Upon account deletion, all associated data is permanently removed.
6. Your Rights
You can export your data, delete your account (which removes your profile, uploaded textbooks, and all generated study materials), and request information about your stored data at any time by contacting support.
7. Cookies
We use essential cookies for authentication sessions and Google Analytics cookies for traffic analysis. No advertising cookies are used.
8. Changes
We may update this policy as our service evolves. We will notify users of material changes via email.
Questions? Contact us at privacy@textbooks.ai