Privacy Policy
Last updated: May 21, 2026
This Privacy Policy describes how BookIllustrationAI collects, uses, and protects your information when you use our AI coloring book creation service. We try to keep this policy in plain English. If anything is unclear, email support@kindlebookillustrations.com.
1. Information we collect
Account information
- Email address and name, supplied either directly at signup or through Google Sign-In
- An encrypted password if you signed up with email and password (we never see or store your plaintext password)
- Your subscription plan, credit balance, and billing status
Payment information
Payments are processed by Stripe. BookIllustrationAI never receives or stores your full card number, CVC, or expiry. We store a Stripe customer ID, the last 4 digits of your card, the card brand, and your billing country (returned to us by Stripe) so we can show your billing history and process renewals.
Content you create
- Project metadata: book titles, niches, art styles, page counts, author profiles
- Prompts and reference images you enter to generate coloring pages or covers
- Generated coloring pages, covers, thumbnails, and exported PDFs, stored in Supabase Storage
Usage data
- Pages visited, features used, generation success and failure events
- Browser type, device type, approximate location derived from IP address
- Server-side error logs that may include the URL path and a short error message
We use this information to keep the service running, fix bugs, and improve the product. We do not sell or rent your personal information to anyone.
2. How we use your information
- To create and maintain your account and process your subscription
- To generate coloring pages and covers when you request them
- To send transactional emails (receipts, password resets, subscription notices)
- To send product updates if you opted in (you can unsubscribe at any time)
- To respond to support requests and resolve disputes
- To detect abuse, fraud, and violations of our Terms of Service
- To comply with legal obligations
3. AI generation and your prompts
When you generate a coloring page or cover, we send your prompt and any selected style settings to a third-party AI image-generation provider. The provider returns the generated image, which we then store on your account in Supabase Storage.
Our AI providers process your prompts only to fulfill your generation request. We choose providers whose terms prohibit them from training their public models on your inputs or outputs. We do not use your prompts or generated images to train any model ourselves.
Your generated images remain visible only to you and to authorized BookIllustrationAI staff who may need access for support, debugging, or abuse review.
4. Third-party services
BookIllustrationAI shares data with the following processors strictly to operate the service:
- Stripe - payment processing and subscription management
- Supabase - authentication, database, and file storage (your projects and generated images live here)
- Google - optional sign-in (only if you choose Google as your auth provider)
- Resend - transactional email delivery
- AI image-generation providers - inference for generating coloring pages and covers
- Vercel - application hosting and edge delivery
Each of these services has its own privacy policy. We recommend reviewing them if you want full detail on how they handle data.
5. Data retention and deletion
- Account data, projects, and generated images are retained for as long as your account is active.
- If you cancel your subscription, your account and content remain accessible in a read-only state so you can download what you created.
- If you delete your account, we permanently remove your projects, prompts, generated images, and personal information within 30 days, except for records we are legally required to keep (such as invoices, which tax authorities require us to retain for up to 7 years).
- Server logs containing IP addresses are retained for up to 90 days for security and abuse detection.
To delete your account, email support@kindlebookillustrations.com from the address associated with your account.
6. Data security
We take security seriously. All connections to BookIllustrationAI use HTTPS. Passwords are hashed by Supabase Auth, payment data is handled exclusively by Stripe, and database access is restricted to server-side code running with row-level security enabled. No system is perfect, so we cannot guarantee absolute security, but we take reasonable technical and organizational measures appropriate to the sensitivity of the data we hold.
7. International data transfers
BookIllustrationAI and our processors operate servers in the United States, the European Union, and other regions. When your data is transferred outside your country of residence, we rely on the Standard Contractual Clauses or equivalent safeguards approved by your local regulator.
8. Your rights
Depending on where you live, you may have the right to:
- Access the personal data we hold about you
- Request correction or deletion of inaccurate or outdated data
- Export a copy of your data in a portable format
- Restrict or object to certain types of processing
- Withdraw consent for marketing communications at any time
- Lodge a complaint with your local data protection authority
To exercise any of these rights, email support@kindlebookillustrations.com. We will respond within 30 days.
9. Cookies and tracking
We use essential cookies for authentication and session management. These are required for the service to work. We do not use advertising cookies, cross-site tracking, or sell your browsing data to third parties.
10. Children
BookIllustrationAI is not intended for users under 18. We do not knowingly collect personal information from children. If you believe a child has created an account, contact us and we will remove the account and associated data.
11. Changes to this policy
We may update this policy from time to time. For material changes (for example, new categories of data we collect or new types of third-party sharing), we will notify active subscribers by email at least 14 days before the change takes effect.
12. Contact
For privacy-related questions or to exercise your rights, contact us at support@kindlebookillustrations.com.