Privacy Policy

English Learning Hub - AI Assistant

Last updated: March 20, 2026

1. Overview

English Learning Hub is an AI-powered English learning platform. This privacy policy explains how our browser extension and web application handle user data.

2. Data We Collect

• Authentication data: We use Google Sign-In via Supabase. We store your name, email, and profile picture from your Google account to display within the app.
• Usage data: We track daily feature usage counts (e.g., number of flashcards created, readings completed) to manage usage limits and display progress.
• Learning content: Flashcards, essays, and other learning materials you create are stored in your personal library.
• Browser cookies: The extension uses cookies solely to maintain your authenticated session with the AI service.

3. Data We Do NOT Collect

• We do not collect browsing history
• We do not track your activity on other websites
• We do not collect financial or payment information
• We do not collect location data
• We do not use analytics or tracking scripts

4. How We Use Data

All collected data is used exclusively for:

• Providing the English learning features (flashcards, reading, writing, listening, chat)
• Managing your account and usage limits
• Displaying your learning progress and streak

5. Data Sharing

We do not sell, trade, or transfer your data to third parties. Your learning content is sent to AI services solely for generating responses and is not stored by those services.

6. Data Storage

Your data is stored securely on Supabase (PostgreSQL) with Row Level Security enabled. Each user can only access their own data.

7. Data Deletion

You can delete your learning materials from My Library at any time. To delete your account entirely, contact us at the support email below.

8. Contact

If you have questions about this privacy policy, contact us via Zalo: 0976 275 890