LingJi Apps – Privacy Policy

1. Scope

This Privacy Policy explains how we collect, use, store, and process information when you use LingJi apps, which are designed primarily for language learning and educational purposes (such as vocabulary practice, quizzes, and background audio learning).

By using any LingJi app, you agree to the practices described in this Privacy Policy.

2. Information We Collect

2.1 Information You Provide

We may collect the information you choose to provide, for example:

• Support and feedback: When you contact us via email or through an in-app feedback form, we may collect your email address, your name or nickname (if provided), and the content of your message.
• Surveys or optional forms: If you voluntarily participate in a survey, we may collect your responses and opinions about the app.

We do not require you to create an account, and we do not ask for highly sensitive personal information such as government ID numbers, passport numbers, or full payment card details.

2.2 Automatically Collected Usage Data

To improve the stability and quality of our apps, we may automatically collect certain technical and usage information through analytics and diagnostics services, for example:

• Device model, operating system version, language and region settings
• App version, installation source, and basic usage events (such as app launches and navigation to major screens)
• Error and crash reports (e.g., via Firebase Crashlytics)
• Performance metrics (e.g., app startup time, network request latency) via services such as Firebase Performance
• Non-precise network status information (online/offline) to optimize offline downloads and sync behavior

This information is typically processed in an aggregated or de-identified form and is not used to personally identify you.

2.3 App Settings and Learning Progress

To provide you with a continuous and personalized learning experience, we may store information such as:

• Your preferred learning language and UI language
• Quiz progress, answer history, accuracy rates, unlocked or purchased content
• App settings such as audio volume, background play options, and UI preferences

This information is primarily stored locally on your device (for example in local databases or preference files), rather than on our own servers.

3. How We Use Your Information

We use the information described above for purposes such as:

• Providing and maintaining the core functionality of the apps
• Improving user experience and learning flows
• Analyzing which features are most used, so we can prioritize improvements
• Detecting and fixing bugs, crashes, and performance issues
• Displaying appropriate language content based on region or settings
• Complying with applicable laws and regulations

We do not use your learning data to build “profiles” for third-party advertising, nor do we sell your personal data.

4. Advertising and In-App Purchases

4.1 Advertising (if enabled)

Some LingJi apps may use third-party advertising services (such as Google AdMob) to display ads. These services may use cookies or similar technologies to collect information such as device identifiers and coarse location, in order to provide, measure, and improve ad delivery.

For more details, please refer to the privacy policy of the relevant ad provider, such as Google’s Privacy & Terms .

4.2 In-App Purchases and Virtual Currency

LingJi apps may offer in-app purchases (IAP), such as:

• One-time purchases to remove ads
• Virtual currency packs or bundles to unlock additional content
• Promotional bundles or limited-time offers

All payments are processed by platform providers such as the Apple App Store or Google Play. We do not process or store your full payment card information.

Any virtual currency or unlocked content is valid only within the app or within the LingJi product ecosystem. It has no real-world monetary value and cannot be exchanged for cash.

5. Data Sharing and Third-Party Services

We do not sell your personal data. We also do not share your data with unrelated third parties. We may, however, work with service providers or share limited data in the following situations:

• Analytics and diagnostics: We use services such as Firebase Analytics, Crashlytics, and Performance to collect aggregated statistics and crash reports.
• Cloud hosting and content delivery: We may use cloud storage or content delivery networks (CDNs), such as Cloudflare, to deliver audio files and learning resources. In the process, servers will handle IP addresses and basic request information.
• Legal compliance and protection: We may disclose information if required by law, court order, or competent authority, or if we reasonably believe it is necessary to protect our rights, property, or the safety of our users or the public.

All third-party providers are expected to comply with their own privacy policies and applicable data-protection regulations.

6. Data Retention

We retain information for as long as reasonably necessary to:

• Provide and maintain the functionalities you use
• Comply with legal obligations and accounting or audit requirements
• Resolve disputes and handle support requests

Aggregated or de-identified analytics data may be retained for a longer period for statistical and product-improvement purposes. If you are entitled to request deletion under applicable law, we will process such requests within a reasonable time.

7. Data Security

We use reasonable technical and organizational measures to protect your information from unauthorized access, alteration, disclosure, or destruction. However, no method of transmission over the Internet or method of electronic storage is completely secure.

If we become aware of a data incident that may significantly affect your rights, we will notify you in accordance with applicable laws and regulations.

8. Children’s Privacy

Some LingJi apps may be suitable for younger learners or family learning. However, we do not knowingly collect personal information that can directly identify a child without appropriate consent, where required by law.

If you are a parent or guardian and believe that we have collected personal information about a child without your consent, please contact us using the information in the “Contact Us” section below. We will take appropriate steps to review and, if necessary, delete such information.

9. Your Rights

Depending on your jurisdiction, you may have certain rights regarding your personal data, including:

• The right to know whether we process information about you
• The right to access and request correction of inaccurate data
• The right, in certain circumstances, to request deletion or restriction of processing
• The right to object to certain types of processing, such as direct marketing (if applicable)

To exercise these rights, please contact us using the email address provided below. We may ask you to verify your identity before responding to your request.

10. Changes to This Policy

We may update this Privacy Policy from time to time to reflect changes in our apps, applicable laws, or operational needs. When we make changes, we will update the “Last Updated” date at the top of this page.

In the case of material changes, we may also provide additional notice within the app or through other reasonable means. Your continued use of the LingJi apps after such changes will signify your acceptance of the updated Privacy Policy.

11. Contact Us

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

Email: lingjihelp@gmail.com