Privacy Policy

Effective Date: August 15, 2026
App Name: LingoAI: Speak & Learn English
Contact Email: phanquockhanhit@gmail.com

This Privacy Policy explains how information is collected, used, processed, and protected when you use LingoAI: Speak & Learn English on an Android device.

LingoAI is a language-learning application that provides personalized learning paths, lessons, quizzes, vocabulary practice, AI-powered conversations, speaking practice, role-play scenarios, learning reminders, and progress tracking.

By using the app, you acknowledge that you have read and understood this Privacy Policy. If you do not agree with this Policy, please do not use the app.

1. Information We May Collect

Depending on the features you use, the app may collect or process the following categories of information.

Learning Preferences

When you complete the learning survey or update your learning settings, you may provide information such as:

• Your native language

• The language you want to learn

• Your self-selected learning level

• Your daily learning goal

• Your selected AI tutor

• Your preferred learning path

• Your reminder preferences

This information is used to personalize lessons, exercises, conversation difficulty, and learning recommendations.

Learning Activity and Progress

The app may process information about your learning activity, including:

• Lessons and quizzes completed

• Quiz answers and results

• Vocabulary progress

• Learning streaks

• Learning time

• Completed conversations and role-play sessions

• Grammar, pronunciation, or phrasing feedback

• Lesson and activity history

Learning progress and profile settings may be stored locally on your device. Some information may also be processed by service providers when needed to deliver online or AI-powered features.

Text and Conversation Content

When you use AI Tutor, role-play, or other conversation features, the app may process:

• Messages you type

• Answers submitted during conversations

• Role-play scenarios you create

• Tutor role, learner role, and additional scenario details

• Conversation context needed to generate responses and feedback

This information is used to provide AI-generated replies, language corrections, pronunciation guidance, grammar feedback, translations, and suggested responses.

Please avoid entering passwords, financial information, identification numbers, health information, or other highly sensitive personal information into AI conversations.

Voice and Audio Information

If you choose to use speaking or pronunciation features, the app may request access to your device microphone.

Audio recordings or speech input may be processed to:

• Convert speech into text

• Evaluate pronunciation

• Generate AI responses

• Provide speaking and language feedback

• Support voice-based conversations and role-play activities

Microphone access is used only when you choose a feature that requires voice input. You may deny or disable microphone permission through your Android device settings, but voice-related features may not work without it.

Name or Profile Information

The app may allow you to enter a display name or use a default avatar. Your display name may be used to personalize greetings and the learning experience.

Do not enter information that you do not want displayed within the app.

Device and Technical Information

The app or its service providers may automatically collect limited technical information, such as:

• Device type and model

• Operating system and app version

• Language and regional settings

• Device identifiers

• IP address

• App interaction and diagnostic information

• Crash reports and performance data

• Advertising identifiers, where permitted

• Approximate information derived from network or device settings

This information may be used to operate the app, identify technical problems, improve performance, prevent abuse, and measure feature usage.

2. Android Permissions

The app may request certain Android permissions depending on the features you use.

Microphone

Microphone permission may be requested when you use speaking exercises, pronunciation practice, AI voice conversations, or role-play features.

The app does not activate the microphone unless you choose to start a voice-related feature.

Notifications

Notification permission may be requested to send daily learning reminders, streak reminders, lesson prompts, or other app-related notifications.

You can disable notifications at any time through the app settings or your Android device settings.

Internet and Network Access

Internet access may be required to retrieve learning content, communicate with AI services, load advertisements, validate purchases, and provide online features.

Other Permissions

The app may request additional permissions if they are required for a feature introduced in a future update. Any requested permission should be connected to a visible app function and can be reviewed through the Android permission screen.

3. How We Use Information

Information may be used to:

• Provide lessons, quizzes, vocabulary exercises, and language-learning content

• Create and update your personalized learning path

• Adjust lesson difficulty based on your selected level

• Provide AI Tutor conversations and role-play sessions

• Process speech and text input

• Generate grammar, vocabulary, pronunciation, and phrasing feedback

• Track lesson progress, streaks, learning time, and activity history

• Remember your learning language, level, goal, and tutor selection

• Send learning reminders when enabled

• Provide and manage Premium features

• Display and measure advertisements

• Process rewarded-ad unlocks

• Process and verify purchases or subscriptions

• Maintain app functionality and security

• Diagnose crashes and technical problems

• Improve app features and user experience

• Prevent fraud, misuse, or harmful activity

• Comply with legal obligations

We do not use AI-generated feedback as professional, academic, medical, legal, or other regulated advice.

4. AI-Powered Features

Some features may use artificial intelligence or automated language-processing services.

When you submit text, voice, or scenario information to an AI-powered feature, that content may be transmitted to a third-party AI or cloud service so the requested response, correction, translation, feedback, or learning activity can be generated.

AI-generated responses may be incomplete, inaccurate, inappropriate, or unsuitable for a particular context. You should review AI-generated content before relying on it.

The app does not guarantee that:

• Translations will always be accurate

• Grammar or pronunciation feedback will always be correct

• AI responses will be complete or error-free

• Generated learning content will be suitable for every user or situation

Do not use the app to submit confidential, legally protected, or highly sensitive personal information.

5. Local Storage

Certain information may be stored locally on your Android device, including:

• Learning profile settings

• Selected language and level

• Daily learning goal

• Selected AI tutor

• Lesson progress

• Quiz progress

• Learning streaks

• Learning time

• Activity history

• App preferences

Locally stored information may be removed if you clear the app’s data, uninstall the app, reset your device, or use an in-app deletion option where available.

Removing the app may not automatically delete information previously processed by third-party providers, such as AI, advertising, analytics, or purchase-processing services.

6. Advertising

The app may display advertisements, including rewarded advertisements that allow users to access certain locked lessons, tutors, scenarios, or features.

Advertising providers may collect or process information such as:

• Advertising identifiers

• Device and app information

• IP address

• Approximate location derived from network information

• Advertisement views and interactions

• Diagnostic and fraud-prevention information

Advertising providers process information under their own privacy policies.

Where required, the app may request consent before using information for personalized advertising. Depending on your region and device settings, you may be able to limit ad personalization or reset your advertising identifier.

7. Purchases and Subscriptions

The app may offer Premium features through one-time purchases or automatically renewing subscriptions.

Payments are processed by Google Play or another authorized payment provider. We do not directly receive or store your complete credit or debit card information.

We may receive limited transaction information, such as:

• Product or subscription purchased

• Purchase status

• Subscription status

• Renewal or expiration information

• Transaction or purchase token

• Country or currency information

This information is used to verify purchases, restore eligible purchases, provide paid features, prevent fraud, and manage subscription access.

Purchases and subscriptions are also subject to Google Play’s applicable terms and privacy practices.

8. Analytics, Diagnostics, and Performance

The app may use analytics and diagnostic services to understand how the app is used and to identify technical problems.

These services may process information such as:

• App screens or features used

• Session duration

• Button interactions

• App version

• Device type and operating system

• Crash logs

• Performance information

• Approximate region

• Device or installation identifiers

This information is generally used in aggregated or technical form to improve stability, performance, and feature design.

9. Third-Party Services

The app may use third-party services to provide features such as:

• AI-generated conversations and feedback

• Speech recognition or text-to-speech

• Cloud hosting and data delivery

• Analytics and crash reporting

• Advertising

• Purchase and subscription processing

• Notification delivery

These providers may process information according to their own privacy policies and contractual terms.

Examples may include Google Play services, Google billing services, advertising providers, analytics providers, cloud infrastructure providers, and AI-processing providers.

The exact providers used may change as the app is updated. Users should review the app’s Google Play Data safety section and permission disclosures for current information.

10. Sharing of Information

Information may be shared in the following circumstances:

Service Providers

Information may be shared with providers that help operate the app, including AI, hosting, speech-processing, analytics, advertising, notification, and payment services.

Legal Requirements

Information may be disclosed when reasonably necessary to:

• Comply with applicable law or legal process

• Respond to lawful requests from authorities

• Protect users, the public, or the app

• Investigate fraud, abuse, security incidents, or policy violations

• Enforce applicable terms

Business Transfers

If the app or its related assets are involved in a merger, acquisition, financing, reorganization, or sale, information may be transferred as part of that transaction, subject to applicable law.

We do not sell personal information in exchange for direct monetary payment. Certain advertising or analytics activities may be considered “sharing,” “targeted advertising,” or a “sale” under some regional privacy laws.

11. Data Retention

Information is retained only for as long as reasonably necessary to:

• Provide app features

• Maintain learning progress

• Fulfill the purposes described in this Policy

• Meet legal, accounting, or security requirements

• Resolve disputes

• Prevent fraud and abuse

Locally stored learning information generally remains on your device until you delete the app data or uninstall the app.

Information processed by third-party services may be retained according to those providers’ policies and configured retention periods.

12. Data Security

Reasonable administrative and technical measures may be used to protect information from unauthorized access, loss, misuse, or alteration.

However, no mobile application, online transmission, cloud service, or storage system can be guaranteed to be completely secure. You use the app and submit information at your own risk.

13. Your Choices and Rights

Depending on your location, you may have rights regarding your personal information, including the right to:

• Request access to information associated with you

• Request correction of inaccurate information

• Request deletion of eligible information

• Object to or restrict certain processing

• Withdraw consent where processing is based on consent

• Limit personalized advertising

• Request information about data sharing

• Submit a complaint to a data protection authority

You can also control certain information directly by:

• Changing app settings

• Changing your learning goal or level

• Disabling microphone access

• Disabling notifications

• Resetting your advertising identifier

• Clearing the app’s storage

• Uninstalling the app

To submit a privacy request, contact:

phanquockhanhit@gmail.com

We may need to verify your request before responding. Some information may not be identifiable or recoverable if the app does not use an account system or if the information is stored only on your device.

14. Children’s Privacy

The app is intended for a general audience and is not specifically directed to children under the minimum age required to consent to data processing in their country.

Children should use the app only with the involvement and permission of a parent or legal guardian where required.

We do not knowingly request that children submit sensitive personal information through AI conversations. Parents and guardians should supervise a child’s use of voice, conversation, advertising, and purchasing features.

If you believe that a child has provided personal information without appropriate authorization, contact us at phanquockhanhit@gmail.com.

15. International Data Processing

The app’s service providers may operate in countries other than the country where you live.

As a result, text, voice, technical information, or other data may be processed in jurisdictions with different data-protection laws. Where required, appropriate measures will be used to support lawful international data transfers.

16. Do Not Track

Some browsers and devices provide “Do Not Track” or similar privacy signals. The app may not currently respond to every such signal because there is no universally accepted technical standard for mobile applications.

You may still manage permissions, advertising preferences, and privacy controls through your Android device and Google account settings.

17. Changes to This Privacy Policy

This Privacy Policy may be updated when app features, permissions, service providers, or legal requirements change.

When changes are made, the Effective Date at the top of this Policy will be updated. Material changes may also be communicated through the app or its store listing where appropriate.

Your continued use of the app after an updated Policy becomes effective means that you acknowledge the revised Policy.

18. Contact Us

For privacy questions, requests, or concerns, contact:

Email: phanquockhanhit@gmail.com