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Thank you for using LinkReady's mobile applications. We take your privacy protection very seriously. This privacy policy aims to explain how we collect, use, store, and protect your personal information.

1. Scope of Application

This privacy policy applies to the following iOS applications developed by LinkReady:

2. Information Collection

2.1 Information We Collect

Our applications may collect the following types of information:

• Book information: In "My Library", the book data you enter (title, author, ISBN, cover image, etc.) is only stored locally on your device.
• Usage data: Free quota usage count, used to determine if payment is required for unlock. This data is synced between your devices via iCloud Key-Value Storage.
• Purchase records: In-app purchase records through Apple App Store, managed by Apple. We do not store your payment information.

2.2 Information We Do Not Collect

• We do not collect your personal identification information (name, email, phone number, etc.)
• We do not collect your device identifiers
• We do not collect your location information
• We do not collect your browsing history or usage habits
• We do not sell your data to third parties

3. Data Storage

3.1 Local Storage

All your data (book information, calculation records, etc.) is stored locally on your device, managed using the SwiftData framework provided by iOS. This means:

• Data is completely under your control
• We cannot access your data
• Data will be deleted when you uninstall the application

3.2 iCloud Sync

Some data (such as free quota count) is synced between your devices via iCloud Key-Value Storage. This sync is managed by Apple, and data is transmitted with encryption.

3.3 Data Backup

"My Library" supports exporting book data as a ZIP file, which you can back up to any location. We recommend backing up important data regularly.

4. Third-Party Services

4.1 Apple In-App Purchase Service

In-app purchase functionality is provided by Apple App Store, and payment processing is managed by Apple. Please refer to Apple's Privacy Policy.

4.2 Book Information Query

"My Library" queries third-party API services for book information when scanning barcodes. These services only receive ISBN numbers and no personal information.

5. Data Security

We take the following measures to protect your data security:

• All local data is protected using iOS system-level encryption
• iCloud sync data is encrypted using Apple's standard encryption
• Applications do not request unnecessary system permissions
• Code undergoes regular security audits

6. Children's Privacy

Our applications are not directed at children under 13. We do not intentionally collect personal information from children. If you discover that your child has used our application without your consent, please contact us.

7. Your Rights

You have complete control over your data:

• View data: You can view all stored data in the application
• Export data: You can export data as files for backup
• Delete data: You can delete individual records or clear all data
• Uninstall application: Uninstalling the application will delete all local data

8. Privacy Policy Updates

We may update this privacy policy from time to time. The updated policy will be posted on this page, with the update date displayed at the top. Major changes will be notified to you through in-app notifications.

9. Contact Us

If you have any questions or suggestions about this privacy policy, please contact us through the following methods:

• Email: philonis+support@gmail.com

We will respond to you within 7 business days of receiving your email.