Privacy Policy

Last Updated: January 20, 2025

Official Website: This privacy policy is hosted on the official website of Magical Calendar at devdad.kr.

1. Data Collection and Usage

1.1 Authentication Information

  • Google API tokens (encrypted and stored locally)
  • Calendar and task access permissions
  • No passwords or security questions are collected

1.2 Calendar and Task Data

  • Event details from Google Calendar (only for display and modification within the extension)
  • Task titles, descriptions, and due dates from Google Tasks
  • All processing is done locally

1.3 User Preferences

  • Custom settings like themes, language preferences, and calendar configurations
  • Keyboard shortcut preferences
  • No personally identifiable data is collected

2. Data Storage and Security

2.1 Local Storage

  • All data is stored locally on your device
  • No cloud storage or external servers are used
  • Chrome's secure storage API is utilized

2.2 Data Transmission

  • Data is transmitted directly to Google Calendar and Google Tasks via their official APIs
  • All communications use secure HTTPS protocols
  • No third-party data sharing

3. Google API Services & Data Usage

3.1 Google API Services Usage Details

  • Email Address Usage:
    • Used solely for user authentication and account identification
    • Not shared with any third parties
    • Required for linking your Google Calendar and Tasks
  • Calendar Data Usage:
    • Read access: To display your calendar events and schedules
    • Write access: To create, modify, and delete calendar events
    • Calendar list access: To manage multiple calendar visibility and settings
    • All calendar data is processed locally and only synced with Google Calendar
  • Tasks Data Usage:
    • Read access: To display your task lists and items
    • Write access: To create, update, and complete tasks
    • Task data is only used within the extension and synced with Google Tasks

3.2 Data Processing and Storage

  • All user data is processed locally within the Chrome extension
  • Temporary caching: Some data may be cached locally to improve performance
  • No external storage: We don't store your data on any external servers
  • Data retention: Cache is cleared when you sign out or uninstall the extension

3.3 Limited Use Disclosure

Our use and transfer of information received from Google APIs adheres to Google API Services User Data Policy, including the Limited Use requirements:

  • We only use Google user data to provide and improve the core calendar and task management features
  • We do not transfer any Google user data to third parties
  • We do not use Google user data for advertising purposes
  • We do not allow humans to read the user data unless:
    • We have your explicit consent
    • It is necessary for security purposes
    • It is required to comply with applicable laws

4. User Rights and Control

4.1 Data Access

  • Users can view all stored settings in the extension settings
  • Option to clear all stored settings and data at any time
  • Full control over calendar and task connections

4.2 Data Deletion

  • All local data can be removed by uninstalling the extension
  • Users can revoke access to their Google data at any time through their Google Account Settings
  • No residual data is retained after deletion

5. Changes to Privacy Policy

When we make material changes to this Privacy Policy:

  • Users will be notified through the extension's update notes
  • A notification will be displayed within the extension interface
  • The "Last Updated" date at the top of this policy will be modified
  • Changes will not take effect until users have been notified and given the opportunity to review the changes

6. Contact Information

For privacy concerns or questions:

Email: [email protected]