1. Introduction

Welcome to Sync O'Clock. We respect your privacy and are committed to protecting your personal data. This privacy policy explains how we collect, use, and safeguard your information when you use our timezone comparison tool.

2. Data We Collect

2.1 Local Storage Data

We store your preferences locally in your browser, including:

Selected timezones
Theme preference (light/dark mode)
Language preference
Cookie consent preferences
Created events and schedules

This data never leaves your device unless you explicitly share it.

2.2 Analytics Data (with consent)

When you consent to analytics, we collect:

Pages visited and features used
Device type and browser information
Approximate geographic location (country/region level)
Interaction patterns (clicks, scrolls)

2.3 Error Tracking Data (with consent)

When you consent to functional cookies, we may collect:

Error messages and stack traces
Browser and device information
Actions leading to errors

3. Third-Party Services

3.1 Google Analytics 4

We use Google Analytics to understand how users interact with our service. Google Analytics uses cookies and collects anonymous usage data. You can opt out via our cookie consent banner or by using browser extensions like Google Analytics Opt-out.

Google Privacy Policy

3.2 Sentry

We use Sentry for error tracking to improve application stability. Sentry collects error reports and diagnostic information when issues occur.

Sentry Privacy Policy

3.3 Google AdSense

We display advertisements through Google AdSense. Google may use cookies to serve ads based on your prior visits to this or other websites. You can opt out of personalized advertising by visiting Google Ad Settings.

Google Advertising Privacy

4. How We Use Your Data

To provide and maintain our service
To improve user experience based on usage patterns
To identify and fix technical issues
To display relevant advertisements
To analyze aggregate usage trends

5. Your Rights

You have the right to:

Access: View the data stored about you
Deletion: Clear your local data by clearing browser storage
Opt-out: Decline non-essential cookies via our consent banner
Portability: Export your data (available in app settings)
Withdraw consent: Change your cookie preferences at any time

To manage your consent preferences, click the cookie settings in the consent banner or clear your browser's localStorage.

6. Data Retention

Local storage data persists until you clear your browser data. Analytics data is retained according to Google Analytics default retention periods (14 months). Error tracking data in Sentry is retained for 90 days.

7. Cookies

We use the following types of cookies:

Essential: Required for basic functionality (no consent needed)
Analytics: Help us understand usage patterns (requires consent)
Advertising: Used for ad personalization (requires consent)
Functional: Enable error tracking features (requires consent)

8. Children's Privacy

Our service is not directed at children under 13. We do not knowingly collect personal information from children. If you believe we have collected data from a child, please contact us.

9. Changes to This Policy

We may update this privacy policy from time to time. We will notify you of any changes by posting the new policy on this page and updating the "Last updated" date.

10. Contact Us

If you have questions about this privacy policy or our data practices, please contact us at:

Email: privacy@sync-oclock.com