Yui Privacy Policy

1. Introduction

Your privacy is important to us. This Privacy Policy explains how Yui ("the App") collects, uses, stores, and protects information when you use our mobile application that transforms photos and videos into time-slice narratives. Yui is designed to operate without requiring account registration or login, which means we collect minimal information to provide our services. By using Yui, you consent to the practices described in this Privacy Policy.

2. Information We Do Not Collect

Yui is committed to protecting your privacy by not collecting unnecessary personal information. We do NOT collect:

• Personal identification information (name, email address, phone number, etc.)
• Account credentials or login information
• Location data (unless explicitly permitted for specific features you choose to use)
• Contact lists or other personal data from your device
• Browser history or other app usage data

3. Information We Collect Automatically

To provide and improve our services, Yui may collect limited, non-identifiable information automatically when you use the App:

• Device information: Basic technical information about your device (device model, operating system version, unique device identifier) to ensure the App functions properly across different devices
• Usage data: Anonymous data about how you interact with the App (e.g., features used, time spent on the App) to improve user experience and fix technical issues
• App performance data: Crash reports and error logs to identify and resolve technical problems

All automatically collected information is aggregated and anonymized, meaning it cannot be used to identify individual users.

4. Information You Voluntarily Provide

Yui only processes content that you voluntarily upload to the App, including:

• Photos and videos you choose to import into the App for creating time-slice narratives
• Custom text and timestamps you add to your creations
• Payment information (if you purchase coins): Processed through third-party payment providers, and we do not store your payment details

All user-uploaded content is processed locally on your device whenever possible. When cloud processing is necessary for certain features, your content is encrypted during transmission and deleted from our servers immediately after processing is complete.

5. How We Use Your Information

We use the information we collect for the following limited purposes:

• To provide and maintain the core functionality of Yui (e.g., processing images/videos to create time-slice narratives)
• To improve the App's performance, usability, and features
• To diagnose and fix technical issues and bugs
• To process in-app purchases for the coin-based system
• To respond to your inquiries or support requests

We will never use your information for advertising purposes, nor will we sell or share your information with third parties for commercial purposes.

6. Data Storage and Security

User-generated content (photos, videos, creations) is primarily stored locally on your device. Any temporary data stored on our servers is encrypted and retained only for the time necessary to provide the requested service (typically no longer than 24 hours). We implement industry-standard security measures to protect your data from unauthorized access, alteration, disclosure, or destruction.

However, no method of transmission over the internet or electronic storage is 100% secure. While we strive to use commercially acceptable means to protect your information, we cannot guarantee absolute security.

7. Third-Party Services

Yui may integrate with third-party services for specific features:

• Payment processors: For in-app coin purchases (we do not store your payment information)
• Sharing platforms: To enable you to share your creations (you control what content is shared)
• Analytics tools: For anonymous usage data collection to improve the App (no personal data is collected)

These third-party services have their own privacy policies, and we are not responsible for their practices. We encourage you to review the privacy policies of these third-party services before using them.

8. Your Rights and Controls

You have full control over your data when using Yui:

• You can delete your content from the App at any time
• You can uninstall the App to remove all locally stored data
• You can decline permission requests for accessing photos/videos (though this will limit core functionality)
• You can contact us to request deletion of any temporary data stored on our servers

Since Yui does not require account registration, there is no personal data profile associated with your use of the App.

9. Children's Privacy

Yui is not intended for use by children under the age of 13. We do not knowingly collect any personal information from children under 13. If we become aware that a child under 13 has used the App and provided personal information, we will take steps to delete such information immediately.

10. Changes to This Privacy Policy

We may update our Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy within the App and updating the "Effective Date" at the top of this policy. We encourage you to review this Privacy Policy periodically for any changes. Your continued use of the App after any modifications to this Privacy Policy constitutes your acceptance of the revised terms.