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Privacy Policy

Last Updated: June 2026

At LibroLang, accessible from our Web App, iOS App, and Android App, one of our main priorities is the privacy of our users. This Privacy Policy document contains types of information that is collected and recorded by LibroLang and how we use it.

1. Information We Collect

When you register for an account or use our applications (Web, iOS, Android), we may collect the following information:

  • Personal Identification Information: Email address, name, and profile picture (if using social login).
  • Usage Data: Your reading progress, CEFR level, vocabulary deck (saved words, flashcards), and AI tutor quiz scores.
  • Device and App Data: Device type, operating system, unique device identifiers, and crash logs (via services like Crashlytics) to help us diagnose bugs and improve app stability.

2. How We Use Your Information

We use the information we collect in various ways, including to:

  • Provide, operate, and maintain our Web, iOS, and Android applications.
  • Synchronize your reading progress and vocabulary deck seamlessly across all your devices.
  • Generate personalized AI reading materials, audio, and reading comprehension quizzes calibrated to your specific learning level.
  • Improve, personalize, and expand our app functionalities.
  • Find and prevent fraud and abuse.

3. Data Sharing & Third Parties

We do not sell your personal data to third parties. We may share data with trusted third-party service providers solely for the purpose of operating our services:

  • AI Providers: To generate stories, definitions, audio pronunciations, and quiz feedback. Data sent to AI providers is strictly contextual to your learning experience.
  • Analytics & Diagnostics: Services like Firebase Crashlytics to monitor app stability on mobile devices.
  • Authentication & Database Hosting: Services used to securely store your user credentials and cross-platform reading data.

4. Data Retention and Security

We retain your personal information only for as long as is necessary for the purposes set out in this Privacy Policy. We use industry-standard security measures to protect against the loss, misuse, and alteration of data used by our system.

5. User Rights and Deletion

You have the right to access, update, or request the deletion of your personal data at any time. You can request full account deletion directly within the mobile app settings or by contacting our support team. Upon deletion, your vocabulary deck, reading history, and account details will be permanently removed.

6. Changes to This Privacy Policy

We may update our Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page. You are advised to review this Privacy Policy periodically for any changes.

7. Contact Us

If you have additional questions or require more information about our Privacy Policy, do not hesitate to contact us at wilidgasoft@gmail.com.