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Privacy Policy

Last updated: January 11, 2026

Introduction

GeoMastery ("we", "our", or "us") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, and safeguard your information when you use our website and browser extension (GeoMastery Connector).

Information We Collect

GeoMastery Website

  • Account Information: Email address, username (when you create an account)
  • Authentication: We use Supabase Auth for secure authentication
  • Usage Data: Pages visited, features used (for improving the service)

GeoMastery Connector Extension

  • GeoGuessr Game Data: Your matches, rounds, scores, and game statistics
  • GeoGuessr Profile: Username, rating, country, level, XP
  • Authentication Cookie: Only the _ncfa cookie from geoguessr.com (required for API access)
  • Telemetry (Optional): In-game movements and interactions (only if you play with the extension active)

How We Use Your Information

  • To provide and maintain the GeoMastery service
  • To sync your GeoGuessr game history automatically
  • To display statistics, analytics, and insights about your gameplay
  • To improve our services and develop new features
  • To communicate with you about service updates

Data Storage and Security

  • All data is stored securely on Supabase servers (industry-standard security)
  • Your GeoGuessr authentication cookie is stored locally in your browser only
  • We use HTTPS encryption for all data transmission
  • We implement security best practices to protect your information

Data Sharing

We DO NOT:

  • Sell your personal data to third parties
  • Share your data with advertisers
  • Track you outside of GeoGuessr and GeoMastery
  • Access data from other browser extensions or websites

We MAY share data with:

  • Supabase: Our database and authentication provider
  • Vercel: Our hosting platform
  • Law Enforcement: If required by law or to protect rights and safety

Third-Party Services

GeoMastery interacts with:

  • GeoGuessr: We fetch your game data from their API using your authentication
  • Supabase: For database and authentication services
  • Vercel: For hosting our web application

These services have their own privacy policies which govern their use of your information.

Your Rights

You have the right to:

  • Access: Request a copy of your personal data
  • Correction: Request correction of inaccurate data
  • Deletion: Request deletion of your account and data
  • Export: Request an export of your data
  • Opt-out: Uninstall the extension at any time

To exercise these rights, contact us at [seu-email@exemplo.com]

Extension Permissions

The GeoMastery Connector extension requires the following permissions:

storage

To cache your GeoGuessr profile and extension settings locally

cookies

To read your GeoGuessr authentication cookie (_ncfa) for API access

notifications

To notify you when matches are successfully synced

host_permissions (geoguessr.com)

To intercept and capture your game data while you play

Children's Privacy

Our service is not directed to children under 13. We do not knowingly collect personal information from children under 13. If you believe we have collected such information, please contact us immediately.

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 Privacy Policy on this page and updating the "Last updated" date.

Open Source

GeoMastery and the GeoMastery Connector extension are open source projects. You can review our code at any time to verify our privacy practices.

GitHub: github.com/seu-usuario/geo-mastery

Contact Us

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

By using GeoMastery or installing the GeoMastery Connector extension, you acknowledge that you have read and understood this Privacy Policy.