Privacy Policy

Last Updated: December 22, 2025

1. Introduction

Welcome to Trakaido. We respect your privacy and are committed to protecting your personal data. This privacy policy explains how we collect, use, store, and protect your information when you use our language learning application.

Trakaido ("we," "our," or "us") provides a multi-language learning platform available at trakaido.com and its subdomains. This policy applies to all users of our web application and native mobile applications.

2. Information We Collect

2.1 Information You Provide

When you create an account with Trakaido, we may collect:

  • Email address
  • Username or display name
  • Language learning preferences

2.2 Learning Data

To provide our spaced repetition and adaptive learning features, we collect:

  • Study activity history (words practiced, activities completed)
  • Performance statistics (correct/incorrect answers, response times)
  • Word tier progression and mastery levels
  • Selected study materials and learning preferences
  • Audio playback preferences (voice selection)
  • Timestamps of study sessions and per-word review

2.3 Technical Information

We automatically collect certain technical information for security purposes and abuse prevention:

  • Browser type and version
  • Operating system
  • IP address
  • Device information
  • Usage patterns and feature interactions

2.4 Demo Mode

If you use Trakaido in demo mode (without authentication), your learning data is stored locally on your device using IndexedDB and localStorage. This data never leaves your device and is not transmitted to our servers.

3. How We Use Your Information

We use your information for the following purposes:

3.1 Providing Services

  • Deliver personalized language learning experiences
  • Implement spaced repetition algorithms for optimal review scheduling
  • Sync your learning progress across devices
  • Generate statistics and progress reports
  • Provide audio pronunciations and listening activities

3.2 Improving Our Service

  • Analyze usage patterns to improve our algorithms
  • Debug technical issues and optimize performance
  • Develop new features and study modes
  • Understand which learning materials are most effective

3.3 Security and Fraud Prevention

  • Protect against unauthorized access
  • Detect and prevent abuse of our services
  • Maintain the security of our platform

3.4 Communication

  • Send important service updates and security notices
  • Respond to your inquiries and support requests
  • Provide optional learning tips and updates (with your consent)

4. Data Storage and Security

4.1 Storage Methods

Trakaido offers two storage options:

  • Demo Mode: All data stored locally on your device using browser storage (IndexedDB, localStorage). This data is never transmitted to our servers.
  • Authenticated Mode: Learning data and statistics synced to our secure servers, enabling cross-device access.

4.2 Security Measures

We implement industry-standard security measures including:

  • Encryption of data in transit using HTTPS/TLS
  • Regular security audits and updates
  • Access controls and authentication mechanisms
  • Secure server infrastructure

4.3 Authentication

Trakaido exclusively uses third-party authentication providers, such as Google Auth. We never store user passwords, including encrypted passwords.

4.4 Data Retention

We retain your personal information and learning data for as long as your account is active. If you delete your account, we will remove your personal data within 30 days, though some anonymized usage statistics may be retained for analytical purposes.

5. Data Sharing and Disclosure

We do not sell, rent, or trade your personal information to third parties.

5.1 Limited Sharing

We may share your information only in the following circumstances:

  • Service Providers: With trusted third-party services that help us operate our platform (hosting, analytics, authentication), under strict confidentiality agreements.
  • Legal Requirements: When required by law, subpoena, or legal process.
  • Safety and Security: To protect the rights, property, or safety of Trakaido, our users, or the public.
  • Business Transfers: In the event of a merger, acquisition, or sale of assets, your data may be transferred to the new owner.

5.2 Anonymized Data

We may use and share anonymized, aggregated data that cannot identify individual users for research, analysis, and improvement of language learning methods.

6. Your Rights and Choices

6.1 Access and Control

You have the right to:

  • Access your personal data and learning statistics
  • Correct inaccurate information
  • Delete your account and associated data
  • Export your learning data
  • Opt out of optional communications

6.2 Demo Mode

You can use Trakaido in demo mode without creating an account. In this mode, all data is stored locally on your device and can be cleared by clearing your browser data.

6.3 Marketing Communications

You can opt out of promotional emails at any time by clicking the unsubscribe link in the email or adjusting your account settings.

7. Cookies and Tracking Technologies

Trakaido uses cookies and similar technologies for:

  • Essential Cookies: Required for authentication and basic functionality
  • Preference Cookies: Remember your language selection and settings
  • Analytics Cookies: Help us understand how users interact with our application

You can control cookie settings through your browser preferences. Note that disabling certain cookies may limit functionality.

8. Children's Privacy

Trakaido is not directed to children under the age of 13. We do not knowingly collect personal information from children under 13. If you believe we have inadvertently collected such information, please contact us immediately, and we will delete it.

9. International Data Transfers

Your information may be transferred to and processed in countries other than your country of residence. We ensure appropriate safeguards are in place to protect your data in accordance with this privacy policy.

10. Third-Party Links

Our service may contain links to third-party websites or services. We are not responsible for the privacy practices of these third parties. We encourage you to read their privacy policies.

11. Changes to This Policy

We may update this privacy policy from time to time. We will notify you of significant changes by:

  • Posting a notice in the application
  • Sending an email to registered users
  • Updating the "Last Updated" date at the top of this policy

Your continued use of Trakaido after changes become effective constitutes acceptance of the updated policy.

12. Contact Us

If you have questions, concerns, or requests regarding this privacy policy or our data practices, please contact us:

13. Data Protection Rights (GDPR)

If you are located in the European Economic Area (EEA), you have additional rights under the General Data Protection Regulation (GDPR):

  • Right to Access: Request a copy of your personal data
  • Right to Rectification: Correct inaccurate data
  • Right to Erasure: Request deletion of your data
  • Right to Restrict Processing: Limit how we use your data
  • Right to Data Portability: Receive your data in a structured format
  • Right to Object: Object to certain types of processing
  • Right to Withdraw Consent: Withdraw previously given consent

To exercise these rights, please contact us at privacy@trakaido.com. We will respond to your request within 30 days.

14. California Privacy Rights (CCPA)

If you are a California resident, you have additional rights under the California Consumer Privacy Act (CCPA):

  • Right to know what personal information is collected, used, shared, or sold
  • Right to delete personal information
  • Right to opt-out of the sale of personal information (Note: we do not sell personal information)
  • Right to non-discrimination for exercising your CCPA rights

To exercise these rights, please contact us at privacy@trakaido.com.

Questions About Privacy?

We're here to help. Contact us at privacy@trakaido.com

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