Privacy Policy

This Privacy Policy explains how BookSurf, a service of Spillwave LLC (Texas, USA) (“we”, “us”, “our”), collects, uses, and protects your information when you use our website (book-surf.com) and the BookSurf GhostWriter application (app.book-surf.com).

Information We Collect

• Account information: name, email, and authentication identifiers
• Usage data: pages visited, product interactions, and device information
• Content you provide: briefs, chapter edits, uploads, and feedback
• Payment data: billing details processed by Stripe (we do not store full card numbers)

How We Use Information

• Provide and improve the BookSurf service
• Generate and refine outlines, drafts, and exports you request
• Analyze product performance and troubleshoot issues
• Communicate updates, support, and service announcements
• Prevent abuse, enforce policies, and ensure platform integrity

Cookies and Analytics

We use cookies and similar technologies to maintain sessions and understand usage. We may use Google Analytics and similar tools to measure traffic and conversion. You can control cookies through your browser settings.

AI Providers and Data Processors

To generate content, we may send portions of your inputs to AI model providers and infrastructure providers as needed to operate the service. Our current processors include OpenAI, Anthropic, Google (AI/Cloud), Perplexity, Stripe (payments), Google Analytics/Tag Manager (analytics), and Google Cloud Platform (hosting/storage). We do not use your content to train our own models, and where available we instruct model providers not to use your data for training. We require processors to safeguard data and use it only to provide their services to us.

Data Sharing

We do not sell your personal information. We share data only with:

• Service providers acting on our behalf (hosting, analytics, payments)
• AI model providers to fulfill generation requests you initiate
• Legal or safety requests when required by law or to protect rights

Data Retention

We keep data for as long as necessary to provide the service and for legitimate business or legal purposes. You may request deletion of your account data by contacting support.

Your Rights

To request access, correction, export, or deletion of your personal information, email support@booksurf.com. We may need to verify your identity to process your request.

Children’s Privacy

BookSurf is not directed to children under 13. We do not knowingly collect personal data from children.

Data Location

Your information is processed in the United States. If you access the service from outside the U.S., you understand your data will be transferred to and processed in the U.S.

Changes to This Policy

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

Contact Us

Questions about privacy? Reach us at support@booksurf.com.