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Privacy Policy

Last updated: February 26, 2026

1. Introduction

LangTeach ("we", "our", or "us") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our language teaching platform.

We comply with the General Data Protection Regulation (GDPR) and other applicable data protection laws.

2. Data Controller

LangTeach is the data controller responsible for your personal data. Contact details:

3. Information We Collect

3.1 Information You Provide

  • Account information: Name, email address, password (hashed)
  • Profile information: Language preferences, role (teacher/student/admin)
  • Payment information: Processed securely by Stripe; we do not store card details
  • Educational content: Tests, lessons, and materials you create
  • Student data: Test results, progress, and class enrollment

3.2 Information Collected Automatically

  • Usage data: Pages visited, features used, time spent on platform
  • Device information: Browser type, operating system, IP address
  • Cookies: See Section 8 (Cookie Policy) below

4. How We Use Your Information

We use your information to:

  • Provide and maintain the Service
  • Process payments and manage subscriptions
  • Send important notices about your account
  • Provide customer support
  • Improve and develop new features
  • Ensure security and prevent fraud
  • Comply with legal obligations

5. Legal Basis for Processing (GDPR)

We process your personal data based on:

  • Contract: Processing necessary to provide the Service you requested
  • Consent: Where you have given explicit consent (e.g., marketing, analytics cookies)
  • Legitimate interests: For security, fraud prevention, and service improvement
  • Legal obligation: To comply with applicable laws

6. Data Sharing and Disclosure

We may share your information with:

  • Service providers: Supabase (database), Stripe (payments), Vercel (hosting)
  • Within your organization: Teachers can see student data in their classes; school admins can see teacher and student data
  • Legal requirements: When required by law or to protect our rights

We do not sell your personal data to third parties.

7. Data Retention

We retain your personal data for as long as:

  • Your account is active
  • Needed to provide the Service
  • Required by law (e.g., financial records)

After account deletion, we may retain anonymized data for analytics purposes. Backup data is automatically deleted within 90 days.

8. Cookie Policy

8.1 Essential Cookies

Required for the Service to function. These include:

  • Authentication cookies (to keep you logged in)
  • Security cookies (CSRF protection)
  • Cookie consent preference

8.2 Analytics Cookies

With your consent, we use Vercel Analytics to understand how our Service is used. These cookies collect anonymized usage data.

8.3 Managing Cookies

You can manage your cookie preferences through the cookie banner when you first visit our site. You can also clear cookies through your browser settings at any time.

9. Your Rights (GDPR)

You have the right to:

  • Access: Request a copy of your personal data
  • Rectification: Correct inaccurate personal data
  • Erasure: Request deletion of your personal data ("right to be forgotten")
  • Portability: Receive your data in a structured, machine-readable format
  • Restriction: Limit how we process your data
  • Object: Object to processing based on legitimate interests
  • Withdraw consent: Where processing is based on consent

To exercise these rights, contact us at support@langteach.com. We will respond within 30 days.

10. Data Deletion Requests

To request deletion of your account and personal data:

  1. Email support@langteach.com with subject "Data Deletion Request"
  2. Include your registered email address for verification
  3. We will process your request within 30 days
  4. You will receive confirmation once deletion is complete

Note: Some data may be retained as required by law (e.g., financial transaction records for tax purposes).

11. International Data Transfers

Your data may be processed in countries outside the European Economic Area (EEA). We ensure appropriate safeguards are in place, including:

  • Standard Contractual Clauses approved by the European Commission
  • Use of service providers with adequate data protection certifications

12. Children's Privacy

Students under 16 should only use the Service with parental or teacher consent and supervision. Teachers and schools are responsible for obtaining appropriate consent before enrolling minor students.

13. Security

We implement appropriate technical and organizational measures to protect your data, including:

  • Encryption in transit (TLS/HTTPS)
  • Encryption at rest for sensitive data
  • Access controls and authentication
  • Regular security audits
  • Row-level security in our database

14. Changes to This Policy

We may update this Privacy Policy periodically. We will notify you of significant changes by email or through a notice on the Service. Your continued use after changes constitutes acceptance of the updated policy.

15. Contact and Complaints

For privacy-related questions or concerns, contact us at: support@langteach.com

You also have the right to lodge a complaint with a supervisory authority. In Estonia, this is the Data Protection Inspectorate (Andmekaitse Inspektsioon): www.aki.ee