Privacy Policy

SereneBooks LLC — Last updated: March 30, 2026

This Privacy Policy applies to the following products operated by SereneBooks LLC, a Pennsylvania limited liability company:

1. Who We Are

SereneBooks LLC is a small software company based in Philadelphia, Pennsylvania. We build tools for people who love books. You can reach us at hello@serenebooks.com.

2. What We Collect

Bookplate

When you create an account and use Bookplate, we collect:

Within a shared library group, reading activity, ratings, and newly added books are visible to other members of your group. Personal notes you add to books are private to you alone and are never visible to other members of your shared library group.

OrganizedSpine

When you create an account and use OrganizedSpine, we collect:

3. How We Use Your Information

We use the information we collect to:

We will never sell your personal information. We will never share your personal information with advertisers or third parties for marketing purposes. Your inventory and library data belong to you.

4. AI-Assisted Features

Both Bookplate and OrganizedSpine include an AI-powered genre suggestion tool. When you add a book, metadata — specifically title, author, ISBN, and any additional catalog information retrieved from our book databases (such as synopsis and subject tags) — may be sent to a third-party AI service to generate genre suggestions tailored to the categories you have defined in your library or inventory.

No personally identifiable information is ever sent to AI services. The AI tool processes book metadata only — it has no access to your account details, reading history, notes, or any other personal data.

We currently use OpenAI to power this feature. We may change AI providers in the future; this policy will be updated to reflect any such change.

5. Third-Party Services

We work with the following third-party services to operate our products:

ServicePurpose
PostmarkTransactional email delivery
StripePayment processing
DigitalOcean / HatchboxHosting and infrastructure
ISBNdbBook metadata lookup
Open LibraryBook metadata lookup (backup)
OpenAIAI genre suggestions (Bookplate and OrganizedSpine)

Each of these services operates under its own privacy policy. We share only the minimum information necessary for each service to function.

6. Data Retention

We retain your data for as long as your account is active. If you close your account, we will delete your personal data within 30 days, except where we are required to retain it for legal or financial compliance purposes (such as billing records).

7. Your Rights

You have the right to:

To exercise any of these rights, contact us at hello@serenebooks.com.

8. Children's Privacy

Our services are not directed at children under 13. We do not knowingly collect personal information from children under 13. If you believe we have inadvertently collected such information, please contact us and we will delete it promptly.

9. Changes to This Policy

We may update this policy from time to time. When we make material changes, we will notify active users by email and update the “Last updated” date at the top of this document. Continued use of our services after such notice constitutes acceptance of the revised policy.

10. Contact

SereneBooks LLC
Philadelphia, Pennsylvania
hello@serenebooks.com