Privacy Policy for Doppler Shift Calculator
Last updated: August 31, 2025
This Privacy Policy explains how the Doppler Shift Calculator mobile application ("the App"), developed by Project Next World, collects, uses, discloses, and protects your information when you use our App. We are committed to safeguarding your privacy and ensuring that your information is handled responsibly. By using the App, you agree to the terms outlined in this Privacy Policy.
1. Information We Collect
The Orbital Velocity Calculator is designed to perform calculations based on user-provided inputs (mass and orbital radius) to determine orbital velocity. The App does not collect, store, or process any personal information from users. Specifically:
No Personal Data Collection: The App does not collect personally identifiable information (PII) such as your name, email address, phone number, or any other identifying details.
User Inputs: The App only processes numerical inputs (mass in kilograms and orbital radius in meters) provided by you during usage. These inputs are used solely for performing the orbital velocity calculation and are not stored, saved, or transmitted outside the App.
No Device Information: The App does not collect or access device-specific information such as device ID, IP address, location data, or usage analytics.
No Third-Party Data: The App does not integrate with third-party services or APIs that collect data.
2. How We Use Your Information
Since the App does not collect personal information, there is no usage of personal data. The numerical inputs (mass and radius) you provide are:
Used temporarily within the App to calculate orbital velocity using the formula v = √(GM/r), where G is the gravitational constant (6.67430 × 10⁻¹¹ m³ kg⁻¹ s⁻²).
Processed in real-time to display the result within the App’s interface.
Not stored after the calculation is complete or when the App is closed.
Not shared, transmitted, or used for any purpose other than performing the calculation.
3. Data Storage and Retention
The Orbital Velocity Calculator does not store any user data, including the inputs provided for calculations:
No Local Storage: Inputs (mass and radius) are not saved to the device’s storage or memory after the App is closed.
No Cloud Storage: The App does not use cloud services or servers to store or process data.
No Persistent Data: All calculations are performed locally on your device, and no data is retained after the calculation is complete.
4. Data Sharing and Disclosure
Since the App does not collect or store any personal or non-personal data, there is no data sharing or disclosure with third parties:
No Third-Party Sharing: The App does not share any information with third parties, as no data is collected.
No Analytics or Advertising: The App does not use analytics tools, advertising networks, or other services that track user behavior or collect data.
Legal Compliance: In the unlikely event that we are required by law to disclose information, there is no user data available to share, as none is collected.
5. Security
We prioritize the security of the App and its users:
Local Processing: All calculations are performed locally on your device, eliminating the risk of data transmission over the internet.
No Data Collection: Since no personal or sensitive data is collected, there is no risk of data breaches related to personal information.
Secure Design: The App is designed to be lightweight and self-contained, minimizing vulnerabilities.
6. Third-Party Services
The Orbital Velocity Calculator does not integrate with any third-party services, APIs, or SDKs that collect, process, or share data. The App operates entirely offline and independently.
7. Children’s Privacy
The App is suitable for users of all ages, including children under 13. Since the App does not collect any personal information, it complies with the Children’s Online Privacy Protection Act (COPPA) and similar regulations. Parents and guardians can be assured that the App does not pose any privacy risks to children.
8. International Users
The App is designed to function offline and does not collect or process data, making it compliant with privacy regulations worldwide, including the General Data Protection Regulation (GDPR) in the European Union and other regional laws. Since no personal data is collected, no special considerations for international users are required.
9. Changes to This Privacy Policy
We may update this Privacy Policy from time to time to reflect changes in the App’s functionality or legal requirements. Any updates will be posted within the App or on the App’s listing in the Google Play Store. The “Last updated” date at the top of this policy will indicate when changes have been made. Since the App does not collect contact information, we cannot notify users directly of updates.
10. Contact Us
If you have any questions or concerns about this Privacy Policy or the App’s data practices, please contact us at:
Email: projectnextworld@gmail.com
Developer: Project Next World
We aim to respond to inquiries within a reasonable timeframe.
11. Compliance with Google Play Policies
This Privacy Policy complies with Google Play Console requirements, including transparency about data collection (none in this case) and clear communication of our practices. The App adheres to all applicable Google Play policies regarding user data and privacy.
By using the Orbital Velocity Calculator, you acknowledge that you have read and understood this Privacy Policy. Thank you for choosing our App to explore the wonders of orbital mechanics!