Effective date: April 15, 2026

Monster Design Co., Ltd ("we", "our", or "us") respects your privacy and is committed to protecting it through this Privacy Policy.

This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our mobile applications, games, and related services, including Ninja Jumping Go and other apps published by Monster Design Co., Ltd.

If you do not agree with the terms of this Privacy Policy, please do not use our apps.

1. Company Information

Monster Design Co., Ltd
30/3 TA16, Thoi An, District 12, Ho Chi Minh City, Vietnam
Company number: 0312031388
DUNS: 555820121
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.

2. Information We May Collect

Depending on the app and the features used, we or our third-party service providers may collect limited information, including:

a. Device Information

• Device model

• Operating system version

• App version

• Language settings

• Device identifiers, including advertising identifiers where permitted

b. Usage Information

• App launches

• Gameplay activity

• Interactions with app features

• Advertising interactions

c. Diagnostic Information

• Crash logs

• Performance data

• Error reports

d. Advertising Data

If our app displays ads, advertising partners may collect certain data to provide, measure, and improve advertising performance.

3. Information We Do Not Intentionally Collect

We do not intentionally collect the following unless explicitly stated in a specific app feature:

• Full name

• Email address from users inside the app

• Phone number

• Physical address

• Payment card details

• Health information

• Contacts

• Photos, videos, or audio recordings

• Sensitive personal data

Payment transactions for in-app purchases, if any, are processed by Apple through the App Store. We do not receive or store your payment card details.

4. How We Use Information

We may use collected information to:

• operate and maintain the app

• improve gameplay and app performance

• detect, prevent, and fix technical issues

• provide customer support

• measure app stability and usage

• display and optimize advertisements

• comply with legal obligations

5. Third-Party Services

Our apps may use third-party services such as:

• Apple App Store services

• Advertising networks

• Analytics services

• Crash reporting tools

These third parties may collect information in accordance with their own privacy policies. We encourage users to review those third-party privacy policies separately.

6. Advertising

Some of our apps may display third-party advertisements. Advertising providers may use device-level information and advertising identifiers, where allowed by applicable law and platform permissions, to serve and measure ads.

Users can manage ad-related permissions through their device settings.

7. Data Sharing

We do not sell your personal information.

We may share limited information with service providers or partners only when necessary to:

• provide app functionality

• serve ads

• analyze app usage

• monitor crashes and technical performance

• comply with legal requirements

8. Data Retention

We retain information only for as long as reasonably necessary for the purposes described in this Privacy Policy, including app functionality, analytics, diagnostics, security, and legal compliance.

9. Children's Privacy

Our apps may be used by a broad audience. We do not knowingly collect personal information from children in a manner that requires parental consent under applicable law. If you believe a child has provided us with personal information inappropriately, please contact us and we will take reasonable steps to delete such information.

10. Your Rights

Depending on your location, you may have rights regarding your personal data, including the right to request access, correction, deletion, or restriction of certain data.

To make a request, contact us at:
This email address is being protected from spambots. You need JavaScript enabled to view it.

11. Security

We take reasonable administrative, technical, and organizational measures to protect information associated with our apps. However, no method of transmission or storage is completely secure, and we cannot guarantee absolute security.

12. International Users

Our company is based in Vietnam. By using our apps, you understand that your information may be processed in Vietnam or other countries where our service providers operate, subject to applicable law.

13. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. Any changes will be posted with an updated effective date. Continued use of our apps after changes are posted means you accept the updated Privacy Policy.

14. Contact Us

If you have any questions about this Privacy Policy, please contact us:

Monster Design Co., Ltd
30/3 TA16, Thoi An, District 12, Ho Chi Minh City, Vietnam
Company number: 0312031388
DUNS: 555820121
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.