Privacy Policy

Effective date: 16 May 2026

This Privacy Policy explains how the application 4Langs (“App”) collects, uses, and protects user data. The App is a language learning application that helps users learn English, Finnish, Russian, and Ukrainian through vocabulary exercises, sentence practice, and audio pronunciation.

1. Information We Collect

The App collects only the minimum data required to provide its functionality.

1.1 Account Information

The App may automatically collect limited technical information:

• Email address
• User ID
• Authentication credentials (securely stored and not accessible in plain text)

1.2 Learning Data

We store user learning progress, such as:

• Completed exercises
• Learned words and sentences
• Scores and progress tracking

This data is linked to the user account to enable synchronization across devices.

1.3 Device and Technical Data

We may collect limited technical information, such as:

• Device type and model
• Operating system version
• App version
• Crash logs and error reports

This data is used to improve app stability and performance.

2. How We Use Information

We use collected data to:

• Provide user authentication and account functionality
• Store and synchronize learning progress
• Deliver educational content through the App
• Improve performance, stability, and user experience
• Diagnose and fix technical issues

We do not sell or rent user data.

3. Backend and Data Processing

The App communicates with a secure backend server to:

• Authenticate users
• Retrieve learning content (words, sentences, exercises)
• Store and update user progress

All communication between the App and backend is performed using secure HTTPS encryption.

4. Audio Content (Pronunciation)

The App includes pre-generated audio pronunciations for educational purposes.

• Audio files were generated using text-to-speech (TTS) technology during content preparation
• The App does not perform real-time voice synthesis
• The App does not record, transmit, or process user voice input

5. Third-Party Services

The App uses third-party services required to operate its backend infrastructure, including hosting and database services.

These service providers may process limited technical information necessary to deliver the App's functionality.

6. Data Storage

User data is stored:

• Securely on backend servers
• Locally on the user's device (for caching and offline access)

We take reasonable technical and organizational measures to protect data from unauthorized access.

7. Data Sharing

We do not sell, rent, or trade personal data. We may share limited technical data only with service providers that help us operate the App (e.g. backend hosting and database service providers).

8. Data Retention

User data is retained as long as the account is active. Users can permanently delete their account directly from the App. When an account is deleted, the associated personal data is permanently removed, except where retention is required by applicable law.

9. Children's Privacy

The App is intended for a general audience. If we become aware that we have collected personal data from a child in violation of applicable laws, we will take steps to delete such data.

10. Security

We use reasonable security measures to protect user data. However, no method of transmission or storage is completely secure.

11. User Rights

Depending on your location, you may have the right to:

• Access your personal data
• Request correction or deletion of data
• Withdraw consent for data processing

To exercise these rights, contact us using the email below.

12. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. Updates will be published on this page with a new effective date.

13. Contact

If you have any questions about this Privacy Policy, please contact:

Email: irensula19@gmail.com

To learn how to delete your account, please visit our Delete Account page.