Fluent Rush

Privacy Policy

Last updated: April 12, 2026

Fluent Rush ("we", "our", or "us") is committed to protecting your privacy. This policy explains what information we collect, how we use it, and your rights regarding your data.

1. Information We Collect

Account information: When you create an account, we collect your first name, last name, and email address.

Learning progress: We store your lesson completions, quiz scores, flashcard review history, XP, streaks, and study statistics so your progress is saved and synced across devices.

Device data: We store learning data locally on your device using localStorage and IndexedDB for offline access. This data never leaves your device unless you have an account.

2. How We Use Your Information

To create and manage your account
To save and sync your learning progress across devices
To personalize your learning experience (lesson recommendations, difficulty adjustments)
To send password reset emails if requested

We do not use your data for advertising, and we do not sell your data to third parties.

3. Third-Party Services

Fluent Rush uses the following third-party services to operate:

Supabase — Stores your account information and synced progress data. Supabase is GDPR-compliant. See their privacy policy.
Anthropic (Claude AI) — Powers the AI tutor feature. When you use the tutor, your messages are sent to Anthropic's API. See their privacy policy.
Netlify — Hosts the Fluent Rush web app. See their privacy policy.
Web Speech API — Text-to-speech is processed entirely on your device by your browser. No audio data is sent to our servers.

4. Data Storage & Security

Your account data is stored securely on Supabase servers with industry-standard encryption. Local progress data is stored only on your device and is not accessible to us.

We take reasonable measures to protect your information but cannot guarantee absolute security over the internet.

5. Data Retention

We retain your account data for as long as your account is active. If you delete your account, your data is permanently removed from our servers within 30 days.

6. Your Rights

You have the right to:

Access the personal data we hold about you
Request correction of inaccurate data
Request deletion of your account and data
Export your learning progress data (available in Settings)

To exercise any of these rights, contact us at the email below.

7. Children's Privacy

Fluent Rush 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 information, please contact us and we will delete it.

8. Changes to This Policy

We may update this privacy policy from time to time. We will notify you of significant changes by updating the date at the top of this page. Continued use of Fluent Rush after changes constitutes acceptance of the updated policy.

9. Contact Us

If you have any questions about this privacy policy or your data, please contact us at:

support@fluentrush.com