Welcome to Goldstone ("the App"), developed by Mr. Shen Chang Xing / Round Stone Art ("we", "us", or "our").

We attach great importance to your privacy. This Privacy Policy explains how we handle, collect, or do not collect your information. By downloading and using the App, you agree to the terms of this policy.
1. Information Collection and Use
• No Personal Identification Data Collected: We do not require you to register an account, nor do we collect your name, email address, phone number, physical address, or any personally identifiable information.
• Creative Assets and Local Storage: Any seal carving artworks, catalogs, font settings, and temporary files you create within the App are stored entirely locally on your iPad device. We do not upload any of your artworks or design assets to any external servers.
2. Device Permissions To provide a complete seal carving simulation experience, the App may request the following iPad system permissions when necessary:
• Photo Library Access: This permission is required when you wish to save exported "digital seals" (transparent PNG or JPG images) to your iPad's photo library, or when you import custom images as reference templates. We will never actively read or upload any unrelated photos from your library.
• Touch Support: The App only reads pressure and touch data to simulate the strokes and force of a real carving knife. This data does not involve any privacy information.
3. Third-Party Services and Analytics
• No Third-Party Trackers: The App does not contain any third-party advertising trackers that monitor your personal behavior.
• System Logs: If you have opted-in to share analytics in your iOS settings, we may receive anonymous crash logs through Apple's official console. This data is used solely to fix bugs and improve app stability and cannot be used to identify you personally.
4. Data Security and Deletion Since all your creative works and operational records are stored on your personal device, their security is protected by your iPad's system security mechanisms. We strongly recommend that you regularly back up your device via Apple iCloud to prevent data loss.
• Data Deletion: If you wish to delete all your creations and settings within the App, simply uninstall the App from your iPad.
5. Children's Privacy The App is a tool aimed at art enthusiasts and educational promotion, and it does not contain any content inappropriate for children. We do not knowingly collect any personal information from children under the age of 13.
6. Changes to This Privacy Policy We may update our Privacy Policy from time to time to reflect functional upgrades to the App or changes in legal requirements. Any modified terms will be posted directly on this page. You are advised to review this page periodically for any changes.
7. Contact Us If you have any questions or suggestions regarding this Privacy Policy, or if you encounter any issues while using the App, please feel free to contact us:
• Email: [email protected]
• Last Updated: June 18, 2026