1. Information We Collect

JMaster does not collect or store personally identifiable information unless you voluntarily provide it. We may collect the following types of information:

• Device information: basic technical data such as device model, operating system, browser type.
• Usage data: interactions with app features, to improve app performance.
• Purchase information: when using Apple/Google In-App Purchases, we may receive your name or email for customer support and data synchronization.

2. How We Use Your Information

All information is used solely for:

• Ensuring proper operation of the application
• Improving user experience and performance
• Processing purchases such as removing ads via In-App Purchase
• Providing customer support when necessary

3. Permissions Used By the App

The JMaster app may request certain permissions to function correctly:

• Notifications: to send reminders about scheduled study times
• Read/Write Storage: to store audio files and learning data on your device
• Network Access: to check Internet connection to load learning content

4. In-App Purchases

Users may purchase premium features (such as removing ads) using Apple ID or Google Play. When you log in with your store account, we may receive basic account details (such as name or email) strictly for customer support and data recovery. You may use your purchase on up to one iPhone and one iPad simultaneously.

5. Third-Party Services

JMaster uses third-party services to enhance functionality:

• Google Play Services
• AdMob
• Firebase Analytics

Please note that we are not responsible for the content, privacy practices, or security of external websites.

6. Data Security

We implement industry-standard security measures to protect your data. However, no online or mobile service can be completely secure, and we cannot guarantee absolute protection.

7. Children’s Privacy

Our services are not directed to children under 13 years old. We do not knowingly collect personal information from children.

8. Your Rights (GDPR / CCPA)

Depending on your region, you may have rights to:

• Request access to your data
• Request deletion of your data
• Opt out of data collection used for advertising

To exercise any of these rights, contact us via email.

9. Changes to This Policy

We may update this Privacy Policy at any time. Any changes will take effect immediately when published on this page.

10. Contact Us

If you have any questions regarding this Privacy Policy, please contact us at:
Email: phamtheduybk@gmail.com