Shelvd

Privacy Policy

Last updated: February 10, 2026

1. Overview

Shelvd is operated by Frequency AI Ltd, trading as Cashew Crate. We are committed to protecting your privacy. This policy explains what data we collect, why, and how we handle it.

2. Data We Collect

When you use Shelvd, we store:

  • Account info: Email address (via authentication provider)
  • Reading data: Book titles, authors, reading status, ratings, notes, and reading progress
  • Usage preferences: License status and cookie consent (stored in your browser's localStorage)

We do not store the content of the books you read. We only store metadata (title, author, cover URL, page count) sourced from Open Library.

3. How We Use Your Data

  • To provide the reading tracking service
  • To sync your library across devices
  • To calculate reading statistics (Pro feature)
  • To process payments via Polar

We do not sell your data, share your reading habits with third parties, or use your reading data for advertising purposes.

4. Third-Party Services

  • Open Library: Book search and metadata (no personal data sent)
  • Google AdSense: Ads shown to free users (with cookie consent). Subject to Google's privacy policy.
  • Polar: Payment processing for Pro subscriptions
  • Supabase: Secure database hosting for your reading data

5. Cookies

We use cookies for authentication (session management) and, with your consent, for Google AdSense advertising. You can accept or reject advertising cookies via the cookie consent banner. Essential cookies for authentication cannot be disabled.

6. Data Security

Your reading data is stored securely in our database. All connections use HTTPS encryption. Backend access uses service-role authentication — your data is not publicly accessible.

7. Data Retention & Deletion

Your data is retained as long as your account is active. You can request data export or deletion by contacting [email protected]. Upon account deletion, all reading data is permanently removed.

8. Your Rights (GDPR)

Under GDPR, you have the right to access, correct, delete, or export your personal data. Contact [email protected] to exercise these rights.

9. Changes

We may update this policy from time to time. Changes will be posted on this page with an updated date.

10. Contact

For privacy questions, contact [email protected].
Frequency AI Ltd, 71-75 Shelton Street, Covent Garden, London WC2H 9JQ.