Privacy Policy

Introduction

Welcome to Personal Library Manager ("we," "our," or "us"). This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our mobile application and web service (collectively, the "Service"). Please read this privacy policy carefully. If you do not agree with the terms of this privacy policy, please do not access the Service.

Information We Collect

Personal Information

We collect information that you voluntarily provide to us when you:

• Register for an account (email address, display name)
• Create or edit your user profile (bio, avatar image)
• Add books to your library (book titles, authors, ISBNs, personal notes, ratings)
• Create collections and manage book loans
• Submit suggestions or vote on features
• Contact our support team

Automatically Collected Information

When you access the Service, we may automatically collect:

• Device Information: Device type, operating system, browser type
• Usage Data: Pages visited, features used, time spent on the Service
• Cookies and Similar Technologies: Session cookies for authentication
• Log Data: IP address, access times, error logs

Camera and Scanner Permissions

With your permission, we access your device camera to scan book barcodes (ISBN). Images are processed locally and are not stored or transmitted unless you explicitly save them.

How We Use Your Information

We use the information we collect to:

• Provide, operate, and maintain the Service
• Manage your account and authenticate your identity
• Store and organize your personal book library
• Generate personalized book recommendations
• Enable you to share public collections with others
• Process and respond to your suggestions and support requests
• Improve and optimize the Service
• Send you technical notices, updates, and security alerts
• Detect and prevent fraud, abuse, and security issues
• Comply with legal obligations

How We Share Your Information

Public Collections

When you make a collection public and share its link, the following information becomes visible to anyone with the link: collection name, description, books in the collection (titles, authors, ISBNs, cover images), and your ratings. Your personal notes are never shared publicly.

Service Providers

We use third-party service providers to operate our Service:

• Supabase: Authentication and database hosting (see Supabase Privacy Policy)
• Vercel: Application hosting and delivery
• Open Library API: Book information lookup (no personal data shared)

Legal Requirements

We may disclose your information if required by law, court order, or to protect our rights, property, or safety, or that of our users or the public.

Data Security

We implement appropriate technical and organizational security measures to protect your personal information, including encryption of data in transit (HTTPS/TLS), secure authentication via Supabase, row-level security on database queries, and regular security updates. However, no method of transmission over the internet is 100% secure, and we cannot guarantee absolute security.

Your Rights and Choices

You have the following rights regarding your personal information:

• Access: Request access to your personal data
• Correction: Update or correct your information via your profile settings
• Deletion: Request deletion of your account and all associated data
• Export: Download your library data via CSV or JSON backup
• Opt-out: Disable camera permissions in your device settings
• Collection Privacy: Change collections from public to private at any time

To exercise these rights, please contact us at the email address listed below.

Data Retention

We retain your personal information for as long as your account is active or as needed to provide you the Service. If you request account deletion, we will delete your data within 30 days, except where we are required to retain it for legal, regulatory, or security purposes.

Children's Privacy

Our Service is not intended for children under the age of 13. We do not knowingly collect personal information from children under 13. If you are a parent or guardian and believe your child has provided us with personal information, please contact us, and we will delete that information.

International Data Transfers

Your information may be transferred to and maintained on servers located outside of your state, province, country, or other governmental jurisdiction where data protection laws may differ. By using the Service, you consent to such transfers.

Cookies and Tracking Technologies

We use cookies and similar tracking technologies to:

• Maintain your login session (authentication cookies - essential)
• Remember your preferences
• Analyze Service usage and performance

You can control cookies through your browser settings, but disabling cookies may limit your ability to use certain features of the Service.

Third-Party Links

The Service may contain links to third-party websites (e.g., Open Library for book covers). We are not responsible for the privacy practices of these third parties. We encourage you to review their privacy policies.

Changes to This Privacy Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by updating the "Last Updated" date at the top of this page. Your continued use of the Service after changes constitutes acceptance of the updated policy.

Contact Us

If you have questions or concerns about this Privacy Policy or our data practices, please contact us:

Additional Rights for EU and California Residents

GDPR (EU Residents)

If you are located in the European Union, you have additional rights under GDPR:

• Right to be informed about data collection and use
• Right to access your personal data
• Right to rectification of inaccurate data
• Right to erasure ("right to be forgotten")
• Right to restrict processing
• Right to data portability
• Right to object to processing
• Rights related to automated decision-making

CCPA (California Residents)

If you are a California resident, you have rights under the California Consumer Privacy Act (CCPA):

• Right to know what personal information is collected
• Right to know whether personal information is sold or disclosed
• Right to say no to the sale of personal information (we do not sell your data)
• Right to access your personal information
• Right to deletion of personal information
• Right to non-discrimination for exercising your rights