Privacy Policy

Welcome to LangFusion. We are committed to protecting your privacy and ensuring you have a positive experience while using our mobile application. This Privacy Policy explains how we collect, use, share, and protect your personal information.

Who we are: LangFusion is a language learning mobile application designed to help users learn multiple foreign languages simultaneously through interactive practice modes including quizzes, flashcards, pronunciation training, and real-life dialogue situations.

By using LangFusion, you agree to the collection and use of information in accordance with this policy. If you do not agree with our policies and practices, please do not use our app.

We collect several types of information to provide and improve our service. The data we collect includes:

We use the collected data for the following purposes:

• •Provide the service: To enable core functionality including language practice, progress tracking, vocabulary saving, and quiz generation
• •Personalization: To customize your learning experience based on your selected languages, proficiency level, and learning history
• •Improvement: To analyze usage patterns and improve app features, content quality, and user experience
• •Technical support: To diagnose technical issues, prevent fraud, and ensure app security
• •Communication: To send important updates, notifications about your progress, and respond to your inquiries
• •Analytics: To understand how users interact with the app and identify areas for enhancement (aggregated and de-identified)

We process your personal data based on the following legal grounds:

• •Consent: You provide consent when you create an account and use our app
• •Contract performance: Processing is necessary to provide the services you requested
• •Legitimate interests: To improve our services, prevent fraud, and ensure security
• •Legal obligations: When required by law to retain certain data

We do not sell your personal data. We only share data with trusted third-party service providers who help us operate the app:

• •Hosting providers: To store app data and ensure service availability
• •Analytics providers: To understand usage patterns and improve the app (data is aggregated and anonymized)
• •Crash reporting services: To identify and fix technical issues
• •Authentication services: To securely manage user accounts

These service providers are contractually obligated to protect your data and use it only for the purposes we specify. We do not share your data for advertising or marketing purposes by third parties.

We retain your personal data only for as long as necessary to provide our services and comply with legal obligations:

• •Active accounts: Data is retained while your account is active
• •Deleted accounts: Data is permanently removed within 30 days of account deletion request
• •Legal retention: Some data may be retained longer if required by law, for fraud prevention, or dispute resolution
• •Analytics data: Aggregated and de-identified usage data may be retained for statistical purposes

We take the security of your personal data seriously and implement industry-standard measures to protect it:

• •Encryption in transit: All data transmitted between your device and our servers is encrypted using HTTPS/TLS protocols
• •Encryption at rest: Sensitive data is encrypted when stored on our servers
• •Access controls: Only authorized personnel have access to user data, and access is logged
• •Regular audits: We regularly review and update our security practices

While we strive to protect your data, no method of transmission over the internet is 100% secure. We cannot guarantee absolute security but are committed to protecting your information to the best of our ability.

LangFusion is intended for users aged 13 and older. We do not knowingly collect personal information from children under 13 years of age. If you are a parent or guardian and believe your child under 13 has provided us with personal information, please contact us at support@langfusion.app, and we will promptly delete such information.

For users between 13 and 18, we recommend parental guidance when using the app.

Your data may be transferred to and processed in countries other than your country of residence. These countries may have different data protection laws. When we transfer data internationally, we ensure appropriate safeguards are in place to protect your personal information in accordance with this Privacy Policy and applicable laws.

Depending on your location, you may have the following rights regarding your personal data:

• •Access: Request a copy of the personal data we hold about you
• •Correction: Request correction of inaccurate or incomplete data
• •Deletion: Request deletion of your personal data (see section below)
• •Portability: Request your data in a structured, commonly used format
• •Objection: Object to certain types of data processing
• •Withdraw consent: Withdraw your consent at any time where processing is based on consent

To exercise any of these rights, please contact us at support@langfusion.app.

If you have any questions, concerns, or requests regarding this Privacy Policy or our data practices, please contact us:

We aim to respond to all inquiries within 5 business days.

We may update this Privacy Policy from time to time to reflect changes in our practices, technology, legal requirements, or for other operational reasons. When we make changes, we will:

• •Update the Effective Date at the top of this policy
• •Notify you through the app or via email if changes are significant
• •Post the updated policy on this page

We encourage you to review this Privacy Policy periodically. Your continued use of LangFusion after changes are posted constitutes your acceptance of the updated policy.