Privacy Policy

Hello TOEIC ("we", "our", "us") operates the website www.hellotoeic.com. This Privacy Policy explains how we collect, use, and protect your personal information when you use our service.

1. Information We Collect

Account Information

• Email address (required for account creation)
• Full name (optional, for profile personalization)
• Authentication data via Google OAuth or email/password

Usage Data

• Exercise answers, scores, and completion status
• Study streaks, XP points, and daily progress
• Mock test results and performance analytics
• AI coach conversation history

Payment Information

• Payment details are processed directly by Stripe. We do not store credit card numbers, CVVs, or full card details on our servers.
• We store your Stripe customer ID and subscription status.

Technical Data

• Browser type, device type, operating system
• IP address (anonymized for analytics)
• Pages visited and time spent

2. How We Use Your Information

• Provide and improve the TOEIC learning experience
• Track your study progress, streaks, and goals
• Generate AI-powered explanations tailored to your answers
• Process subscription payments and manage your account
• Send optional study reminders and weekly progress summaries (you can opt out)
• Analyze aggregate usage patterns to improve the platform

3. Data Sharing

We do not sell your personal data. We share data only with:

• Supabase — database hosting and authentication
• Stripe — payment processing
• OpenAI — AI explanations via gpt-4o-mini (see section 9 below for AI Coach data processing details)
• Vercel — website hosting
• Resend — transactional emails (reminders, receipts)

4. Data Retention

We retain your account data for as long as your account is active. If you delete your account, we will delete your personal data within 30 days. Anonymized, aggregated analytics data may be retained indefinitely.

5. Your Rights

You have the right to:

• Access your personal data
• Correct inaccurate data
• Delete your account and associated data
• Export your study data
• Opt out of marketing emails

To exercise these rights, contact us at hellotoeic.com@gmail.com.

6. Cookies

We use essential cookies for authentication and session management. We use analytics cookies (anonymized) to understand usage patterns. No third-party advertising cookies are used.

7. Children's Privacy

Hello TOEIC is not directed at children under 13. We do not knowingly collect personal information from children under 13. If you believe a child has provided us with personal data, please contact us.

8. Security

We use industry-standard security measures including HTTPS encryption, secure authentication via Supabase Auth, Row Level Security (RLS) on all database tables, and encrypted payment processing via Stripe.

9. AI Coach (OpenAI Processing)

We use OpenAI's gpt-4o-mini model to generate detailed Vietnamese explanations on demand when you tap the "Hỏi AI sâu hơn" button under an exercise.

• What is sent to OpenAI: the exercise question text, the answer options, the correct answer, and your selected answer. No personally identifiable information (no email, name, user ID, or device data) is included in prompts.
• OpenAI training:per OpenAI's API data usage policy, content sent via the API is not used to train OpenAI models.
• Caching:generated explanations are stored in our database keyed by question and answer choice so we don't re-call OpenAI for the same scenario. This reduces cost and latency.
• Quotas: free users get 3 AI explanations per day (resets at midnight, Asia/Ho Chi Minh time). Pro subscribers have unlimited access.
• Opt-out:AI Coach is opt-in per request — simply don't tap the button. Static Vietnamese explanations remain available for every exercise without involving OpenAI.

10. Changes to This Policy

We may update this policy from time to time. Changes will be posted on this page with an updated "Last updated" date. Continued use of the service after changes constitutes acceptance of the updated policy.

11. Contact

For privacy-related questions or requests, contact:

• Email: hellotoeic.com@gmail.com
• Phone: 080-2566-2538