Privacy Policy

Quadratic Equation App

Effective Date: April 25, 2026

1. Introduction

Quadratic Equation App ("we," "us," "our," or "Company") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our mobile application and related services (collectively, the "App").

Please read this privacy policy carefully. If you do not agree with our policies and practices, please do not use our App.

2. Information We Collect

2.1 Information You Provide Directly

User Input: Equations, coefficients, and mathematical expressions you enter into the App
Account Information: If you create an account, we may collect your email address and username
Feedback: Comments, suggestions, or support requests you submit

2.2 Automatically Collected Information

Device Information: Device type, operating system, device ID, and hardware model
Usage Data: App features you use, timestamps, and interaction patterns
Crash Reports: Error logs and diagnostic information to improve app stability
Analytics: General usage statistics and app performance metrics

2.3 Information We Do NOT Collect

We do NOT collect personal identification information (name, address, phone number) unless voluntarily provided
We do NOT access your contacts, photos, or files
We do NOT track your location
We do NOT collect biometric data
We do NOT store your equations or calculations without your explicit consent

3. How We Use Your Information

Functionality: To provide, maintain, and improve the App's features
Support: To respond to your inquiries and provide customer support
Analytics: To understand how users interact with the App and improve user experience
Security: To detect, prevent, and address fraud and security issues
Compliance: To comply with legal obligations and enforce our terms of service

4. Data Sharing and Disclosure

4.1 Third-Party Services

We may use third-party service providers for:

Analytics: Google Analytics and similar services to understand app usage
Crash Reporting: Firebase Crashlytics to monitor app stability
Cloud Services: Data storage and backup services

4.2 Legal Requirements

We may disclose your information if required by law, court order, or governmental request.

4.3 Business Transfers

If the App or Company is sold, merged, or acquired, your information may be transferred as part of that transaction.

4.4 No Sale of Data

We do NOT sell, trade, or rent your personal information to third parties for marketing purposes.

5. Children's Privacy

5.1 COPPA Compliance

The Quadratic Equation App is designed for educational purposes and complies with the Children's Online Privacy Protection Act (COPPA).

If your target audience includes children under 13:

We do NOT knowingly collect personal information from children under 13
We do NOT use persistent identifiers or cross-app tracking
We do NOT share data with third parties for behavioral advertising
We do NOT allow behavioral or contextual advertising
We do NOT require collection of personal information for using the App
All collected data is used solely to support internal operations

5.2 Parental Consent

If we become aware that a child under 13 has provided personal information, we will delete such information and notify the parent or guardian.

6. Data Security

We implement appropriate technical, administrative, and physical safeguards to protect your information against unauthorized access, alteration, disclosure, or destruction. However, no security system is impenetrable. We cannot guarantee absolute security of your data.

Security Measures:

Encrypted data transmission (HTTPS/SSL)
Secure storage of user data
Regular security audits and updates
Restricted access to personal information

7. Data Retention

User Input Data: Retained only as long as necessary to provide the service (typically deleted after app uninstall or user request)
Analytics Data: Typically retained for 26 months
Account Data: Retained until account deletion or 2 years of inactivity
Crash Reports: Retained for 90 days

Users can request deletion of their data at any time by contacting us.

8. Your Privacy Rights

Depending on your location, you may have the following rights:

Access: Request access to your personal information
Correction: Request correction of inaccurate data
Deletion: Request deletion of your data (right to be forgotten)
Opt-Out: Opt-out of non-essential data collection
Data Portability: Request a copy of your data in a portable format

To exercise these rights, contact us at the information provided in Section 11.

9. Advertising and Analytics

9.1 Non-Personalized Ads

If the App displays advertisements, they are non-personalized and do not use behavioral tracking.

9.2 Analytics

We use Google Analytics and Firebase Analytics to understand app usage patterns. You can opt-out by:

Disabling analytics in the App settings (if available)
Enabling "Limit Ad Tracking" in your device settings
Using privacy-focused browser/device settings

10. Third-Party Links

The App may contain links to third-party websites and services. We are not responsible for the privacy practices of third-party services. We encourage you to review their privacy policies before providing any information.

11. Contact Us

If you have questions about this Privacy Policy, your data, or wish to exercise your privacy rights, please contact us:

Email: danielnudom@gmail.com

Mailing Address: danielnudom@gmail.com

Website: https://danielnudom.github.io

We will respond to your inquiry within 30 days.

12. Policy Updates

We may update this Privacy Policy from time to time to reflect changes in our practices, technology, legal requirements, or other factors. We will notify you of material changes by updating the "Effective Date" at the top of this policy and, where required, obtaining your consent.

Your continued use of the App following the posting of revised Privacy Policy means that you accept and agree to the changes.

13. Compliance with Laws

This Privacy Policy complies with:

COPPA (Children's Online Privacy Protection Act) - United States
GDPR (General Data Protection Regulation) - European Union
CCPA (California Consumer Privacy Act) - California, USA
Google Play Store Policies - App Store Distribution Requirements

Last Updated: April 25, 2026