Privacy Policy

Last updated: February 5, 2026

1. Information We Collect

We collect information you provide directly, including your email address and name. We also collect usage data such as practice progress and exam results. Additionally, we may collect:

  • Audio recordings of your voice (for speaking practice, recorded via your browser's microphone)
  • Written responses you submit for evaluation
  • Automated evaluations, grades, and feedback based on your responses
  • Transcriptions of your speaking recordings

2. How We Use Your Information

We use your information to:

  • Provide and maintain our service
  • Process payments and manage subscriptions
  • Track your learning progress
  • Send important service updates
  • Evaluate your writing and speaking responses
  • Transcribe your speaking audio recordings
  • Analyze usage patterns to improve our service

3. Data Storage and Security

Your data is stored securely using industry-standard encryption. User login credentials are managed entirely by Firebase, so we never store login credentials on our servers. Payment information is processed securely by Stripe and is also never stored on our servers.

4. Third-Party Services

We use the following third-party services:

  • Firebase (Google) - Authentication
  • Stripe - Payment processing
  • MongoDB - Data storage
  • Google Vertex AI (Gemini) — Automated evaluation of writing and speaking responses, audio transcription
  • Mixpanel — Usage analytics and service improvement

We have never sold and will never sell your personal data to any third-party services.

5. Microphone Access & Audio Data

For speaking practice, we request access to your device's microphone. Audio is recorded in your browser and sent to Google Vertex AI for transcription and evaluation in real time.

Audio recordings are not stored — they are processed in real time and discarded immediately. Only the text transcription and evaluation results are retained. You can deny microphone access, but speaking features will not be available.

6. Automated Evaluation

Writing and speaking responses are evaluated automatically by our system, which generates estimated grades, feedback, corrected text, and improvement tips.

Automated evaluations are estimates only and do not represent official CELPIP or TCF scores. Results should not be taken as guaranteed predictions of actual test performance.

7. Your Rights

You have the right to access, correct, or delete your personal data. You can also request a copy of your data or ask us to stop processing it. To exercise these rights, please contact us at support@lextest.app.

8. Cookies

We use essential cookies to maintain your session and preferences. We do not use tracking or advertising cookies.

9. Data Retention

We retain your data for as long as your account is active. If you wish to delete your account, please email us at support@lextest.app. We will delete your personal data within 30 days, except where required by law to retain it.

10. Changes to This Policy

We may update this privacy policy from time to time. We will notify you of any significant changes by email or through a notice on our application.

11. Contact Us

If you have any questions about this Privacy Policy, please contact us at support@lextest.app.