This Privacy Policy describes how your personal information is collected, used, and shared when you use the Calculation Assistant mobile application (the "App").

1. Information We Collect

When you use the App, we may collect the following types of information:

1.1 Information You Provide

The App does not require you to create an account or provide any personal information to use its core functionality. However, if you choose to contact our support team, you may provide us with information such as your name and email address to help resolve your inquiry.

1.2 Automatically Collected Information

When you use the App, we may automatically collect certain information about your device and usage of the App, including:

• Device information, such as your device model, operating system version, unique device identifiers, and mobile network information
• Usage data, such as the features you use, the actions you take within the App, and the time and duration of your use
• Crash reports and performance data to help us identify and fix issues with the App

1.3 Calculation Data

The App may store calculation history and results locally on your device to provide you with a better user experience. This information is stored only on your device and is not transmitted to our servers unless you explicitly choose to share it (for example, when reporting a problem with the App).

2. How We Use Your Information

We use the information we collect to:

• Provide, maintain, and improve the App
• Understand how users interact with the App to enhance functionality and user experience
• Diagnose and fix technical issues
• Respond to your support requests and provide customer service
• Comply with applicable laws and regulations

3. How We Share Your Information

We do not share your personal information with third parties except in the following circumstances:

3.1 Service Providers

We may share information with third-party service providers who perform services on our behalf, such as hosting, data analysis, and customer support. These service providers are contractually obligated to protect your information and use it only for the purposes for which we disclose it to them.

3.2 Legal Requirements

We may disclose your information if required to do so by law or in response to valid requests by public authorities (e.g., a court or a government agency).

3.3 Protection of Rights

We may disclose your information to protect the rights, property, or safety of Calculation Assistant, our users, or others. This includes exchanging information with other companies and organizations for the purposes of fraud protection and credit risk reduction.

4. Data Retention

We retain the information we collect for as long as necessary to fulfill the purposes outlined in this Privacy Policy, unless a longer retention period is required or permitted by law. If you contact us with a support request, we may retain your communication to help resolve future issues.

5. Your Data Protection Rights

Depending on your location, you may have certain rights regarding your personal information, including:

• The right to access the personal information we hold about you
• The right to request correction of inaccurate personal information
• The right to request deletion of your personal information
• The right to object to or restrict our processing of your personal information

To exercise these rights, please contact us at jisuanzhushou4056@163.com. We will respond to your request in accordance with applicable data protection laws.

6. Security of Your Information

We take reasonable measures to protect the information we collect from unauthorized access, use, or disclosure. However, no method of transmission over the internet or electronic storage is completely secure, so we cannot guarantee absolute security.

7. Children's Privacy

The App is not intended for use by children under the age of 13. We do not knowingly collect personal information from children under 13. If we become aware that we have collected personal information from a child under 13 without parental consent, we will take steps to delete that information.

8. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page. You are advised to review this Privacy Policy periodically for any changes.

9. Contact Us

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

Email: jisuanzhushou4056@163.com