Privacy Policy

Last updated: March 2026

1. Introduction

0to1log ("we", "us", "our") operates the website 0to1log.com. This Privacy Policy explains what data we collect, how we use it, and your rights regarding your personal information.

2. Data We Collect

Analytics

With your consent, we use Google Analytics 4 (page views, traffic sources, engagement) and Microsoft Clarity (heatmaps, session replays) to understand how visitors use the site and improve the experience. These tools use cookies that are only loaded after you consent.

Authentication

If you sign in, Supabase Auth stores your email and OAuth profile (Google/GitHub) for authentication and access control.

Performance

Vercel Analytics collects Web Vitals and page performance metrics.

Newsletter

If you subscribe to our newsletter, your email address is collected and managed by Beehiiv, a third-party email service. We do not store your email in our own database. You can unsubscribe at any time via the link at the bottom of each newsletter email.

3. How We Use Your Data

  • Analyze visitor behavior and measure engagement (AARRR metrics)
  • Improve user experience based on UX analytics
  • Authenticate users and manage access
  • Monitor site performance

4. Cookies

We use the following categories of cookies:

  • Essential: Supabase Auth session tokens — required for authentication, no consent needed.
  • Analytics: GA4 (_ga, _gid) and Clarity cookies — loaded only with your consent.

You can manage your cookie preferences via the consent banner shown when you first visit the site.

5. Do Not Track

Our site honors Do Not Track (DNT) signals. When we detect a DNT signal, we do not load analytics cookies (Google Analytics, Microsoft Clarity) unless you have explicitly accepted them through our cookie consent banner.

6. Your Rights

Under the EU General Data Protection Regulation (GDPR) and the Korean Personal Information Protection Act (KPIPA), you have the right to:

  • Access the personal data we hold about you
  • Request correction or deletion of your data
  • Withdraw consent for analytics cookies at any time
  • Object to processing of your data

7. Data Retention

Analytics data is retained according to Google Analytics and Microsoft Clarity default retention policies. Authentication data is retained while your account is active.

8. Contact

For questions about this Privacy Policy or to exercise your rights, contact us at x0to1log@gmail.com.