Privacy Policy

Last Updated: February 6, 2025

Welcome to MarkSize! We respect and protect your privacy. This Privacy Policy explains how we handle information when you use our application.

1. Developer Information

• Developer: Li Jiahua
• Email: 809202631@qq.com
• Address: Floor 32, Building T2, Jiazhaoyeye, Jiangbei, Huicheng District, Huizhou City, Guangdong Province, China

2. Information We Collect

2.1 Usage Data

• MarkSize needs to record your image annotation and measurement projects
• All project data and edited images are stored entirely on your device
• Image markings and measurement data are only stored locally
• We do NOT upload any usage data or images to external servers

2.2 Local Storage

• The app stores your annotation projects, measurement data, and edited images in the device's local database
• You can delete project data at any time through the app
• History records and edited images are saved locally and will be deleted when the app is uninstalled

3. Permissions We Request

3.1 Camera Permission

• Purpose: Take photos for annotation and measurement
• Use Case: Used when you choose "Photo Annotation" feature to capture images
• Note: This permission is optional and only requested when you use the camera feature

3.2 Storage Permission

• Purpose: Read images from your device and save annotated images
• Use Case: Access your photos for annotation and save the edited results
• Note: This is essential permission for the app's core functionality

3.3 Overlay Permission

• Purpose: Display annotation tools and measurement interface on top of images
• Use Case: Show marking tools when editing images

3.4 Other Permissions

• Network Access: Display legal documents (Privacy Policy and Terms of Service)
• Vibrate: Provide haptic feedback during image editing operations

4. How We Use Your Information

Your data is only used for the following purposes:

• Add annotations, markings, and measurements to images
• Save and organize your annotated image projects
• Display your project history and edited images
• Share annotated images as you choose

5. Data Storage and Security

• All project data and edited images are stored locally on your device
• We do not maintain any external servers or databases
• Your annotated images and project data are protected by your device's security measures
• Data will be automatically deleted when the app is uninstalled

6. Third-Party Services

MarkSize has NOT integrated any third-party services, including:

• No analytics services (e.g., Google Analytics, Firebase)
• No advertising networks
• No crash reporting tools
• No cloud storage services
• No social media platforms

7. Children's Privacy

MarkSize does not knowingly collect any information from children under 13. Our app is suitable for all ages. Since we do not collect or transmit any data, there are no age-specific privacy concerns.

8. Data Sharing

We do NOT share, sell, rent, or trade your information with any third parties. Your data remains private and under your control.

9. Your Rights

You have complete control over your data:

• Access: All your project data and images are stored locally and accessible through the app
• Deletion: Delete project data and annotated images from the app at any time
• Complete Removal: Uninstalling the app deletes all associated data

10. User Guidelines

11. Changes to 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. Your continued use of MarkSize after changes indicates acceptance of the updated policy.

12. International Data Transfer

Since MarkSize processes all data locally on your device without transmitting to external servers, there is no international data transfer involved.

13. Contact Us

If you have any questions or concerns about this Privacy Policy, please contact us:

• Email: 809202631@qq.com
• Developer: Li Jiahua
• Address: Floor 32, Building T2, Jiazhaoyeye, Jiangbei, Huicheng District, Huizhou City, Guangdong Province, China

14. Legal Compliance

This application complies with:

• Google Play User Data Policy
• General Data Protection Regulation (GDPR) - EU
• California Consumer Privacy Act (CCPA) - USA
• Personal Information Protection Law of the People's Republic of China