Privacy Policy

Our Fundamental Privacy Commitment & Architecture

Client-Side Computation Sandbox (Zero Calculation Logging)

At FactorCalc (accessible at `https://factorcalc.org` and its associated domains), we hold the privacy of our visitors in the highest regard. This comprehensive Privacy Policy document details the types of information collected and recorded by FactorCalc, how we use that data, and the strict controls in place to protect your digital rights.

FactorCalc is intentionally engineered around a client-side computational architecture. When you factor a polynomial, compute the greatest common factor (GCF), decompose an integer into prime roots, or solve a quadratic equation, all mathematical calculations execute locally within your web browser’s memory using JavaScript BigInt primitives.

Local Device Execution Guarantee

Your calculation queries, mathematical variables, and numerical inputs are NEVER transmitted across the internet to our backend servers, nor are they logged, recorded, or monetized. Your academic work remains strictly confidential within your local device environment.

Information We Collect and How We Process It

Voluntarily Submitted Inquiries & Communication Records

FactorCalc collects personal information only in transparent, minimal circumstances where you explicitly choose to provide it:
1. Voluntarily Submitted Contact Information: If you contact us directly via our interactive contact form or official email address (`hello@factorcalc.org`), we may receive your full name, email address, chosen inquiry category, subject line, and message content. This information is used exclusively to respond to your specific question, investigate reported mathematical edge cases, or provide technical assistance. We never sell, rent, or lease your contact details to third-party marketing brokers.

Standard Automated Technical Server Log Files

1. Standard Technical Server Log Files: Like virtually all modern web servers, our hosting environment utilizes standard log files. Information collected in log files includes internet protocol (IP) addresses, browser user-agent strings, internet service providers (ISPs), date and time stamps, referring/exit pages, and operating systems. These technical data points are not linked to any personally identifiable individual and are processed solely for:
2. – Administering server infrastructure and monitoring platform uptime;
3. – Preventing distributed denial-of-service (DDoS) attacks and malicious brute-force abuse;
4. – Analyzing aggregate demographic trends to optimize browser compatibility.
5. Server logs are automatically overwritten and purged on a rolling 30-day schedule.

Google AdSense & Third-Party Advertising Disclosures

DoubleClick DART Cookies & Third-Party Ad Serving

To maintain all 15 calculation engines and comprehensive educational guides 100% free of charge for students and teachers worldwide, FactorCalc partners with third-party advertising networks, including Google AdSense.

Personalized Advertising Opt-Out Directives

In accordance with Google AdSense Publisher Policies, users must be informed of the following disclosures: − Third-Party Cookies: Third-party vendors, including Google, use cookies to serve advertisements based on a user’s prior visits to FactorCalc or other websites across the internet. − DoubleClick DART Cookie: Google’s use of advertising cookies enables it and its certified advertising partners to serve targeted, relevant ads to our visitors based on their browsing history on FactorCalc and other sites on the World Wide Web. − Opt-Out Instructions: Visitors may opt out of personalized advertising at any time by visiting [Google Ads Settings](https://www.google.com/settings/ads).

Industry Consumer Choice Portals (NAI & DAA)

• Network Advertising Initiative: Alternatively, users can opt out of a third-party vendor’s use of cookies for personalized advertising by visiting the Network Advertising Initiative opt-out page at [optout.networkadvertising.org](https://optout.networkadvertising.org/) or the Digital Advertising Alliance Consumer Choice page at [aboutads.info/choices](https://www.aboutads.info/choices/).

FactorCalc has no access to or control over cookies that are utilized by third-party advertisers once served. We encourage you to consult the respective privacy policies of these third-party ad servers for detailed information on their practices and opt-out mechanisms.

Cookie Policy & Browser Management

Categories of Cookies Deployed on FactorCalc

A cookie is a small text file placed on your device to enable specific website functionalities. FactorCalc categorizes cookies used on our platform as follows: − Strictly Necessary / Technical Cookies: Essential for basic page delivery, user session integrity, and security tokens (such as CSRF protection nonces on our contact form). These cookies do not track user behavior across other websites. − Functional / Preference Cookies: Used to remember your interface preferences (such as light mode display settings or method selector states). − Third-Party Advertising Cookies: Placed by Google and advertising exchange partners to serve and cap the frequency of advertisements.

Managing, Disabling, and Deleting Cookies in Your Browser

You have the unconditional right to control, disable, or delete cookies at any time through your web browser settings. Disabling cookies will not affect the computational performance of our math calculators, as all mathematical logic executes client-side without requiring cookies. Consult your browser’s official support documentation for specific instructions: − Google Chrome: Settings → Privacy and Security → Third-party cookies − Mozilla Firefox: Settings → Privacy & Security → Enhanced Tracking Protection − Apple Safari: Preferences → Privacy → Block all cookies − Microsoft Edge: Settings → Cookies and site permissions

California Consumer Privacy Act (CCPA & CPRA Protections)

Statutory Consumer Rights Under California Law

Under the California Consumer Privacy Act (CCPA) and the California Privacy Rights Act (CPRA), California residents are afforded specific statutory rights regarding their personal data: − Right to Know & Access: You have the right to request that FactorCalc disclose the categories and specific pieces of personal information we have collected about you over the past twelve months. − Right to Deletion: You have the right to request the deletion of any personal information collected from you, subject to certain legal exceptions. − Right to Correction: You have the right to request the rectification of inaccurate personal information. − Right to Non-Discrimination: We will never discriminate against you, deny access to our calculation tools, or alter your user experience because you exercised any of your privacy rights.

“Do Not Sell or Share My Personal Information” Declaration

FactorCalc does not sell, rent, disclose, or share your personal information to third parties for monetary or other valuable consideration.

To exercise any of your California privacy rights, please contact our data protection team at `hello@factorcalc.org`. We will acknowledge and respond to verified consumer requests within 45 days.

European General Data Protection Regulation (GDPR Data Subject Rights)

Lawful Bases for Processing Under Article 6 GDPR

If you are a resident of the European Economic Area (EEA), United Kingdom, or Switzerland, FactorCalc processes your personal data in full compliance with the General Data Protection Regulation (Regulation (EU) 2016/679).

Legal Bases for Processing under Article 6 GDPR: − Legitimate Interests: For technical server log processing necessary to ensure network security and prevent cyber attacks. − User Consent: For processing inquiries submitted through our contact form and for non-essential advertising cookies managed through cookie consent banners. − Compliance with Legal Obligations: In the rare event of legal process compliance.

Your Statutory Data Subject Rights (Articles 15–21 GDPR)

1. Right of Access (Art. 15 GDPR): Obtain confirmation of whether your data is being processed and obtain a copy.
2. Right to Rectification (Art. 16 GDPR): Request correction of incomplete or inaccurate data.
3. Right to Erasure (Art. 17 GDPR): Request the deletion of your personal data (“Right to be Forgotten”).
4. Right to Restrict Processing (Art. 18 GDPR): Request the temporary limitation of data processing under statutory conditions.
5. Right to Data Portability (Art. 20 GDPR): Receive your personal data in a structured, machine-readable format.
6. Right to Object (Art. 21 GDPR): Object at any time to data processing based on legitimate interests.

To exercise these rights, email our Data Privacy Officer at `hello@factorcalc.org`. You also retain the statutory right to lodge a formal complaint with a competent Data Protection Authority in your EU Member State.

Children’s Online Privacy Protection Act (COPPA & FERPA Compliance)

Protections for Children Under 13 Years of Age (COPPA)

Protecting children while they explore digital educational resources is an imperative priority for FactorCalc. Our platform is designed for general audiences, secondary mathematics students, college learners, and educators.

COPPA Compliance (Under 13 Years of Age): − FactorCalc does not knowingly collect, request, or solicit personally identifiable information from children under the age of 13. − If a parent, legal guardian, or educator becomes aware that a child under 13 has submitted personal information through our contact form, please notify us immediately at `hello@factorcalc.org`. We will promptly take all reasonable steps to permanently delete such information from our records.

Educational Student Data Privacy in Classrooms (FERPA)

FERPA Compliance (Classroom & Student Privacy): − Because our calculators execute 100% locally in the student’s browser without requiring user accounts, student logins, or backend data logging, FactorCalc operates in full harmony with the Family Educational Rights and Privacy Act (FERPA). No student educational records or homework queries are ever compiled, tracked, or monetized.

Data Security, Retention Schedules & Policy Revisions

Modern Transport Layer Security (TLS 1.3 Encryption)

FactorCalc employs robust, industry-standard administrative, technical, and physical security measures to safeguard user data: − All data transmitted between your browser and our servers is secured using modern Transport Layer Security (TLS 1.3 / HTTPS) cryptographic protocols. − We restrict access to technical server environments and incoming contact inquiries strictly to authorized personnel who require access for maintenance.

Strict Data Retention Schedules & Policy Updates

Inquiries submitted via our contact form are retained only as long as necessary to resolve your request and are permanently purged after 12 months.

We reserve the right to update or amend this Privacy Policy periodically to reflect evolving legal requirements or platform enhancements. Any modifications will be posted directly to this page with an updated ‘Effective Date’ timestamp. Continued use of FactorCalc following the posting of changes constitutes acceptance of the revised policy.

Contacting Our Data Privacy Team

Data Privacy Officer Communication Channels

If you have questions regarding this Privacy Policy, wish to exercise statutory data rights under the CCPA or GDPR, or have inquiries regarding our third-party advertising partners, please contact our team: − Email: hello@factorcalc.org − Subject Line: Data Privacy Inquiry − Postal / Legal Jurisdiction: FactorCalc Educational Mathematics Platform, Attn: Privacy Compliance Team.

Frequently Asked Questions