Privacy Policy

1. Introduction

APP DEV MASTERS LTD (Company number: 14989815), trading as PromoBook ("we", "our", or "us"), operates the website promobook.app (the "Service"). This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our Service.

2. Information We Collect

Account Information

When you create an account, we collect:

• Email address
• Display name
• Profile photo (if signed in with Google)

Content Data

When you use our Service, we store:

• Product information you provide (name, description, features, links)
• Book projects, outlines, and chapter content
• Published book content and associated metadata

Usage Data

We automatically collect:

• Page view counts on published books
• Product link click counts on published books
• General usage analytics to improve the Service

Payment Information

Payment processing is handled by Stripe. We do not store your credit card details. Stripe's privacy policy governs the handling of your payment information.

3. How We Use Your Information

We use the information we collect to:

• Provide, maintain, and improve the Service
• Process transactions and send related information
• Generate AI-powered book content based on your product data
• Publish and host your books as web pages
• Provide analytics on your published books
• Send you service-related communications
• Detect, prevent, and address technical issues

4. AI Content Generation

Your product information is sent to third-party AI providers (OpenAI) to generate book content. This data is used solely for content generation and is subject to the AI provider's data processing policies. We do not use your content to train AI models.

5. Data Sharing

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

• Firebase (Google) — for authentication, data storage, and hosting
• OpenAI — for AI content generation
• Stripe — for payment processing
• Vercel — for website hosting

6. Published Books

When you publish a book, its content (title, chapters, product references) becomes publicly accessible at a unique URL. Page view and click analytics are collected for published books. You can unpublish a book at any time to remove public access.

7. Data Retention

We retain your data for as long as your account is active. When you delete a book project, all associated data (chapters, outlines, analytics) is permanently deleted. You may request full account deletion by contacting us.

8. Data Security

We use industry-standard security measures including encrypted connections (HTTPS), Firebase security rules to restrict data access, and secure authentication via Firebase Auth. However, no method of transmission over the internet is 100% secure.

9. Your Rights

You have the right to:

• Access, update, or delete your personal information
• Export your book content at any time
• Delete your account and all associated data
• Opt out of non-essential communications

10. Cookies

We use essential cookies for authentication and session management. We may use analytics cookies to understand how you use the Service. You can control cookies through your browser settings.

11. Children's Privacy

The Service is not directed to individuals under the age of 16. We do not knowingly collect personal information from children under 16.

12. Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by posting the new policy on this page and updating the "Last updated" date.

13. Contact Us

If you have questions about this Privacy Policy, please contact us at info@appdevmasters.com

APP DEV MASTERS LTD
Company number: 14989815