Privacy Policy

Welcome to 4 Function Calculator (accessible online at https://www.4functioncalculator.com). We are dedicated to providing fast, reliable, beautiful, and accessible computational tools while fiercely safeguarding your digital privacy.

This Privacy Policy explains our practices regarding the collection, processing, use, and disclosure of information when you access or use our website, including the standard four-function calculator and all specialized versions:

• 4 Function Calculator (Standard Edition)
• 4 Function Calculator With Square Root (√ Radicals)
• 4 Function Calculator With Exponents (x² and xʸ Powers)
• 4 Function Calculator With Parentheses (Algebraic Grouping)
• 4 Function Calculator With Logarithm (log₁₀ and ln Natural Logs)
• Decimal 4 Function Calculator (Precision Floating-Point & Currency)

By accessing or using our website, you agree to the terms described in this Privacy Policy. If you do not agree with any part of this policy, please discontinue use of the site.

Our core architectural principle is client-side execution. Unlike traditional cloud-based software that sends inputs over the internet to a server to be evaluated, our calculators run entirely in your local web browser using client-side JavaScript.

Specifically:

• We do not intercept, log, analyze, or transmit your typed numbers or calculations.
• We do not store copies of your formulas on our web servers or databases.
• We have no technical means of accessing or reconstructing your personal mathematical sessions.

Because we do not require account registration, we do not ask for or collect names, postal addresses, phone numbers, or billing details. The only forms of information that may be gathered are:

• Technical Log Data: Like almost all web services, our hosting and content delivery network (CDN) providers automatically receive standard server log entries when your browser requests web assets. This may include your IP address, browser type and version, operating system, referring URL, time of access, and requested pages. This data is used solely for network diagnostics, security monitoring, and DDoS defense.
• Voluntary Communications: If you choose to contact our support team via email (e.g., to report a bug or request a feature), we will receive your email address and any details you provide in your message. We use this information solely to respond to your inquiry.

To deliver an intuitive user experience without requiring an account, our website utilizes standard browser HTML5 Web Storage (localStorage). This data remains on your physical hardware and is never transmitted to us:

• Calculation History: When you perform calculations, previous results may be added to your in-browser calculation history log so you can review recent work. You can permanently erase this log at any time by tapping the "Clear All" button within the history panel.
• Language Preference: When you select one of our 18 supported languages (such as English, Spanish, Hindi, or French), your selection is saved in a local key (selected_language) so the website remembers your preferred language on your next visit.

You can remove all on-device data at any time by clearing your browser's cache and local storage in your browser settings.

Cookies are small text files stored on your device that enable websites to recognize returning visitors and support essential features.

To keep 4 Function Calculator 100% free and accessible to students, professionals, and educators worldwide, we may display unobtrusive advertisements served by third-party advertising networks, such as Google AdSense.

• Third-party vendors, including Google, use cookies to serve ads based on prior visits to our website or other websites on the internet.
• Google's use of advertising cookies enables it and its partners to serve ads to users based on their visit to our sites and/or other sites on the Internet.
• Users may opt out of personalized advertising by visiting Google Ads Settings.
• Alternatively, you can opt out of a third-party vendor's use of cookies for personalized advertising by visiting www.aboutads.info or the Network Advertising Initiative Opt-Out Page.

We may use privacy-respecting website analytics services to understand aggregate traffic patterns, such as which calculator tools are most popular, average page load times, and geographic distributions.

Analytics platforms collect non-personally identifiable information (non-PII) such as device types, screen resolutions, and general referral sources. We do not correlate analytical telemetry with individual users or mathematical activity.

If you are a resident of the European Economic Area (EEA) or the United Kingdom (UK), you possess statutory rights under the General Data Protection Regulation (GDPR) and UK GDPR regarding your personal data:

• The Right to Access: You have the right to request copies of any personal data we hold about you.
• The Right to Rectification: You have the right to request correction of inaccurate or incomplete information.
• The Right to Erasure ("Right to Be Forgotten"): You have the right to request that we erase your personal data under certain conditions.
• The Right to Restrict Processing: You have the right to request that we restrict the processing of your personal data.
• The Right to Object to Processing: You have the right to object to our processing of your personal data.
• The Right to Data Portability: You have the right to request transfer of your data to another organization.

Because we operate anonymously without accounts or collected mathematical inputs, we generally do not hold identifiable personal data. To exercise any GDPR rights, please contact our Data Protection representative at basit8225@gmail.com.

Under the California Consumer Privacy Act (CCPA) and California Privacy Rights Act (CPRA), California residents are entitled to specific disclosures and privacy protections:

• We Do Not Sell Your Personal Information: 4 Function Calculator has never sold, rented, or commercialized user personal information, and will not do so.
• We Do Not Share Sensitive Personal Information: We do not collect or process sensitive personal information (such as Social Security numbers, biometric data, precise geolocation, or racial or ethnic origins).
• Right to Know & Delete: You have the right to request disclosure of categories of personal information collected and request deletion.
• Non-Discrimination: We will never discriminate against you, alter service availability, or degrade computational performance for exercising your privacy rights.

Protecting the safety of young learners on the internet is paramount. 4 Function Calculator is a general educational and arithmetic utility suitable for users of all ages, including elementary, middle, and high school students.

In accordance with the Children's Online Privacy Protection Act (COPPA), we do not knowingly request, collect, or store personal identifiable information from children under the age of 13. Because our calculators require no account creation, sign-in, or input of names or addresses, children can freely compute math problems without transmitting personal identifiers.

If a parent or guardian becomes aware that a child has provided us with personal information without parental consent, please contact us immediately so we can promptly delete such information.

We implement robust technical, organizational, and physical safeguards to maintain the integrity and security of our website:

• HTTPS Everywhere: All traffic to and from www.4functioncalculator.com is encrypted using modern Transport Layer Security (TLS 1.3 / SSL), protecting against eavesdropping or man-in-the-middle attacks.
• Content Security Policies: We utilize strict HTTP security headers, including Content Security Policy (CSP), X-Frame-Options, and X-Content-Type-Options.
• No Server-Side Storage: By avoiding backend database storage for calculator operations, we eliminate potential risks associated with database breaches of your equations.

Our website may contain links to external sites (such as educational resources, browser documentation, or our social media profiles on Facebook, X, LinkedIn, and Pinterest).

Please be aware that once you click an external link, you are governed by the privacy practices and policies of that third-party site. We strongly recommend reviewing the privacy notices of any external websites you visit.

We may periodically update our Privacy Policy to reflect modifications to our tools, technological enhancements, or regulatory requirements.

When revisions occur, we will update the "Effective Date" at the top of this page. We encourage visitors to review this page regularly to stay informed about how we maintain your privacy. Continued use of the website following any posted modifications constitutes acceptance of the revised policy.

If you have questions, feedback, or concerns regarding this Privacy Policy or our client-side data practices, our team is always ready to assist: