Last Updated: February 21, 2026
Effective Date: February 21, 2026
Son of a Good Man, Inc. (“Company,” “we,” “our,” or “us”) operates the Shelfmark mobile and web application (the “App” or “Service”).
This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use Shelfmark.
By using the App, you agree to the practices described in this Privacy Policy.
We collect information in the following categories.
When you create an account or use Shelfmark, you may provide:
You may choose not to provide certain information, but some features may not function properly.
When you use the App, we may automatically collect:
We use analytics tools (including Mixpanel or similar providers) to understand how users interact with Shelfmark.
Analytics data may include:
This information helps us improve the Service.
When you use AI-powered features (such as book recognition or recommendations):
AI processing is performed through third-party providers such as OpenAI.
We do not use your private content to train public AI models unless explicitly disclosed.
Purchases are processed by third-party payment providers (such as RevenueCat and Stripe).
We do not store your full credit card number.
We may receive limited billing information such as:
If you use social login (Google, GitHub, Facebook), we receive basic profile information from those providers as authorized by you.
We use collected information to:
We do not sell your personal information.
We share information only in limited circumstances.
We may share data with trusted vendors that help operate the App, including:
These providers process data on our behalf under contractual safeguards.
We may disclose information if required to:
If Son of a Good Man, Inc. undergoes a merger, acquisition, or asset sale, user information may be transferred as part of that transaction.
We retain personal information only as long as reasonably necessary to:
If you delete your account, we will delete or anonymize your personal data within a reasonable period, except where retention is legally required.
5. Data Security
We implement reasonable administrative, technical, and organizational safeguards designed to protect your information.
However, no system is completely secure, and we cannot guarantee absolute security.
Depending on your location (including California), you may have rights to:
To exercise your rights, contact us at support@sonofagoodman.com
We will respond in accordance with applicable law.
California residents have the right to:
To submit a California privacy request, email:
Shelfmark is not directed to children under 13.
We do not knowingly collect personal information from children under 13. If we learn that we have done so, we will delete the information promptly.
Shelfmark is operated in the United States.
If you access the App from outside the U.S., your information may be transferred to and processed in the United States, which may have different data protection laws.
Shelfmark may contain links to external websites (such as retailers or publishers). We are not responsible for the privacy practices of third parties.
We may update this Privacy Policy from time to time.
When we do, we will update the Last Updated date. Continued use of Shelfmark after changes become effective constitutes acceptance of the revised policy.
If you have questions about this Privacy Policy or our data practices, contact:
Son of a Good Man, Inc.
Pasadena, California, United States
Support: support@sonofagoodman.com
Version: 1.0