Privacy Policy - DayMark: Year Calendar to Track Vacations

Last Updated: December 10, 2025

Developer: Viacheslav Mukha

                Quick Summary: DayMark: Year Calendar to Track Vacations | Google™ stores your event data locally in your browser. When you use Google Calendar integration, 
                we only access the calendar data you explicitly authorize. We never sell, share, or transmit your personal information to third parties.
            

1. Information We Collect

1.1 Local Data Storage

DayMark: Year Calendar to Track Vacations | Google™ stores the following information locally in your browser:

Custom Events: Event names, descriptions, dates, and color assignments you create
Settings & Preferences: Language selection, week start day (Monday/Sunday), week numbers, and display preferences
Statistics Data: Calculated statistics based on your events (stored locally)

1.2 Google Calendar Integration (Optional)

If you choose to connect DayMark: Year Calendar to Track Vacations | Google™ with your Google Calendar, we access:

User Profile Information: Your name and email address (to identify your account)
Calendar Data: Your calendar list and events from calendars you select
Event Management: Ability to create, read, update, and delete events you own

Important: Google Calendar integration is completely optional. The extension works fully without it.

2. How We Use Your Information

2.1 Purpose of Data Collection

We use the information collected solely to:

Display your year calendar with custom events
Calculate and show event statistics
Sync with your Google Calendar (if you enable this feature)
Save your preferences and settings
Provide functionality described in the extension

2.2 No Third-Party Sharing

We do not:

❌ Sell your data to any third parties
❌ Share your data with advertisers
❌ Use your data for marketing purposes
❌ Transmit your data to external servers (except Google's servers when you use Google Calendar integration)
❌ Track your browsing activity

3. Data Storage and Security

3.1 Local Storage

All your custom events, settings, and preferences are stored locally in your browser using the browser's storage API. This data remains on your device and is not transmitted to any external servers.

3.2 Google Calendar Data

When you use Google Calendar integration, the extension communicates directly with Google's servers using OAuth 2.0 authentication. We do not store your Google credentials. Authentication tokens are managed securely by your browser and Google's infrastructure.

3.3 Security Measures

OAuth 2.0 authentication for secure Google account access
No storage of passwords or sensitive credentials
Data encryption provided by your browser's storage mechanisms
Limited permissions requesting only necessary access scopes

4. Google API Services

DayMark: Year Calendar to Track Vacations | Google™'s use and transfer of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements.

4.1 OAuth 2.0 Scopes

When you authorize Google Calendar integration, we request the following scopes:

userinfo.profile: To display your name
userinfo.email: To identify your Google account
calendar.calendars: To access your calendar list
calendar.calendarlist: To view and manage your calendar list
calendar.events.owned: To create, view, and manage events you own

4.2 Limited Use Disclosure

DayMark: Year Calendar to Track Vacations | Google™'s use of information received from Google APIs is limited to providing and improving the calendar display and event management features described in this privacy policy.

5. Your Rights and Control

5.1 Data Access and Deletion

You have complete control over your data:

Delete Events: Remove any events directly within the extension
Clear All Data: Uninstalling the extension removes all locally stored data
Revoke Google Access: Disconnect Google Calendar integration at any time through extension settings or Google Account Permissions

5.2 Revoking Permissions

To revoke Google Calendar access:

Open the DayMark: Year Calendar to Track Vacations | Google™ extension
Click the settings icon
Find Google Calendar section and click "Disconnect" or "Sign Out"

Or visit Google Account Permissions and remove DayMark: Year Calendar to Track Vacations | Google™ from authorized apps.

6. Data Retention

Your data is retained only as long as the extension is installed. When you uninstall DayMark: Year Calendar to Track Vacations | Google™, all locally stored data is automatically removed from your browser. Google Calendar data remains in your Google account and is not affected by the extension's installation or removal.

7. Third-Party Services

DayMark: Year Calendar to Track Vacations | Google™ only communicates with Google's services when you explicitly enable Google Calendar integration. We do not use any other third-party services, analytics tools, or advertising networks.

8. Children's Privacy

DayMark: Year Calendar to Track Vacations | Google™ does not knowingly collect information from children under 13 years of age. The extension is designed for general use and does not target children specifically.

9. International Data Transfers

Since all data is stored locally in your browser, there are no international data transfers by DayMark: Year Calendar to Track Vacations | Google™. When using Google Calendar integration, data transfers are governed by Google's privacy policy and infrastructure.

10. Changes to This Privacy Policy

We may update this privacy policy from time to time to reflect changes in our practices or for legal reasons. The "Last Updated" date at the top of this policy indicates when it was last revised. Significant changes will be communicated through the extension's update notes.

11. Contact Information

If you have questions, concerns, or requests regarding this privacy policy or your data, please contact:

Developer: Viacheslav Mukha
Extension: DayMark: Year Calendar to Track Vacations | Google™
Email: viacheslav.mukha@gmail.com
Support: Available through email or Chrome Web Store support page

12. Compliance

DayMark: Year Calendar to Track Vacations | Google™ is committed to complying with applicable privacy laws and regulations, including:

General Data Protection Regulation (GDPR) for users in the European Union
California Consumer Privacy Act (CCPA) for users in California
Chrome Web Store Developer Program Policies
Google API Services User Data Policy

13. Consent

By using DayMark: Year Calendar to Track Vacations | Google™, you consent to this privacy policy. If you do not agree with this policy, please do not install or use the extension.

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