Privacy Policy

1 Information We Collect

1.1 Account Information (Single Sign-On)

Shelfmate uses third-party authentication providers to allow users to sign in. Currently supported providers include:

• Google
• Facebook (Apple Sign-In may be added in the future)

When you sign in, we may receive limited information from these providers, such as:

• Name
• Email address
• Profile image (if available)

We do not collect, store, or have access to your passwords.

1.2 User Content Stored on Device Only

Shelfmate allows users to upload or add content such as:

• Book covers (any image chosen by the user)
• Book titles, authors, and personal catalog data
• Reading status or organizational information

All such content is stored locally on your device only.

We do not:

• Upload this data to our servers
• Sync it across devices
• Back it up to the cloud
• Access, view, or control this data in any way

Because this data remains entirely on your device, we cannot retrieve, modify, or delete it on your behalf.

1.3 Usage and Diagnostic Information

We may collect limited, non-personal information related to app usage and performance, such as:

• Feature usage patterns
• App crashes or errors
• Session duration
• Technical diagnostics

This information is used solely to improve app stability, performance, and reliability.

1.4 Device and Technical Data

We may automatically collect:

• Device model and operating system
• App version
• IP address
• Language and regional settings

This data is used for security, compatibility, and troubleshooting purposes.

2 How We Use Information

We use collected information to:

• Authenticate users via supported sign-in providers
• Operate and maintain the App
• Improve functionality, performance, and user experience
• Diagnose technical issues
• Respond to user support and account deletion requests
• Comply with legal obligations

3 Advertising

Shelfmate may display advertisements now or in the future.

• Advertisements are not personalized based on your reading behavior or local content
• We do not sell personal data to advertisers
• Advertising partners may collect limited device-level information as required to deliver ads

All advertising services used will comply with applicable laws and platform requirements.

4 Data Storage and Security

We implement reasonable technical and organizational safeguards to protect account-related information, including secure authentication mechanisms and encrypted data transmission where applicable.

However, no digital system is completely secure, and we cannot guarantee absolute security.

5 Data Retention

• Account-related information is retained only as long as necessary to provide the App's services or meet legal requirements
• User-generated content stored locally remains on your device until you delete it or uninstall the App

Because locally stored data is not synced or backed up by us, you are responsible for creating any personal backups.

6 Data Loss Disclaimer

Uninstalling the App, resetting your device, or changing devices may result in permanent loss of locally stored data unless you have created your own backup.

We are not responsible for any loss of user data stored on your device.

7 Children's Privacy

Shelfmate is intended for a general audience.

We do not knowingly collect personal information from children in violation of applicable laws. If you believe that a child has provided personal information without appropriate consent, please contact us so we can take appropriate action.

8 Third-Party Services

Shelfmate relies on third-party services for:

• Authentication
• Diagnostics and crash reporting
• Advertising (if enabled)

These third parties operate under their own privacy policies. We are not responsible for their practices and encourage users to review their policies separately.

9 Your Rights

Depending on your location, you may have the right to:

• Access account-related personal data
• Request correction or deletion of such data
• Withdraw consent where applicable

Account deletion requests must be submitted via email. Locally stored data must be deleted directly by the user from their device.

10 Platform Availability

Shelfmate is currently available on Android and may be released on iOS in the future. This Privacy Policy applies across all supported platforms.

11 Changes to This Privacy Policy

We may update this Privacy Policy from time to time.

Material changes will be communicated through the App or other reasonable means. Continued use of the App after updates constitutes acceptance of the revised policy.

12 Contact Information

For questions, concerns, or account deletion requests, contact: