Privacy Policy

Last Updated: January 8, 2026

🛡️ The "Human" Summary

  • We do not sell your data. Ever.
  • We store your email so you can log in.
  • ! YouTube tracks the videos you watch because we embed their player.
  • ! We use cookies to keep you logged in.

1. Introduction

Welcome to 10alect ("we," "our," or "us"). We are committed to protecting your privacy and ensuring transparency about how we collect and use your personal information. This Privacy Policy explains our practices regarding data collection when you use our language learning platform.

2. Information We Collect

2.1 Account Information

When you create an account, we collect:

  • Email address
  • Password (encrypted and never stored in plain text)
  • Account preferences and settings

2.2 Usage Data

We automatically collect information about your interaction with our service:

  • YouTube video IDs you analyze
  • Source and target languages selected
  • Analysis history and preferences
  • Energy and gem usage
  • IP address for rate limiting and security

2.3 Third-Party Content

When you submit YouTube links, we fetch publicly available subtitle data from YouTube. We do not store or transmit video content itself.

3. How We Use Your Information

We use collected information to:

  • Provide and improve our language learning service
  • Process and cache song analyses for faster future access
  • Manage your account, energy, and gems
  • Send important service updates (not marketing emails)
  • Prevent abuse and enforce rate limits
  • Analyze usage patterns to improve our features

4. Data Storage and Security

Your data is stored on our servers with industry-standard security practices. Passwords are hashed using bcrypt. We implement reasonable security measures to protect against unauthorized access, but no system is 100% secure.

Analysis data is cached indefinitely to improve performance for all users. Account data is retained as long as your account is active. You may request deletion at any time.

5. Third-Party Services

We use the following third-party services that may collect data:

  • YouTube API: To fetch video metadata and subtitles (subject to YouTube's Privacy Policy)
  • Translation Services: DeepL API for premium translations and OPUS-MT models for standard translations

These services have their own privacy policies. We recommend reviewing their policies to understand how they handle your data.

6. Cookies and Tracking

We use cookies and local storage to maintain your login session and save preferences. We may use advertising cookies in the future. See our Cookie Policy for detailed information.

7. Data Sharing

We do not sell, rent, or share your personal information with third parties except:

  • When required by law or legal process
  • To protect our rights, safety, or property
  • With service providers who assist in operating our platform (under strict confidentiality)

8. Your Rights

You have the right to:

  • Access your personal data
  • Request correction of inaccurate data
  • Request deletion of your account and data
  • Export your analysis history
  • Opt-out of non-essential data collection

To exercise these rights, please contact us at our contact page.

9. Children's Privacy

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

10. International Users

Your information may be transferred to and processed in countries other than your own. By using our service, you consent to such transfers.

11. Changes to This Policy

We may update this Privacy Policy from time to time. We will notify users of material changes via email or through a prominent notice on our website.

12. Contact Us

If you have questions about this Privacy Policy or our data practices, please contact us: