This Privacy Policy explains how Integralcalculator.info handles information when you visit the website, read guides, use calculators, create an account, purchase Premium where available, or contact us. We aim to collect only information needed to operate the service, protect the website, provide calculator results, and respond to visitors.
Information We May Collect
We may process technical information such as IP address, browser user agent, device and browser details, language header, page path, referrer, timestamps, session data, and request status. When you use a calculator, we may process the calculator slug, math input, selected variable, bounds, operation type, generated result, error messages, and related diagnostic data.
Account and Premium Information
If account or Premium features are enabled, we may store your name, email address, password hash, activation status, email verification time, reset token hashes, Premium solve balance, order reference, order status, amount, currency, payment confirmation time, and related account timestamps. Passwords are stored as hashes and should not be stored as readable plain text.
Calculator Inputs and AI Processing
Calculator inputs and step-help requests may be sent to a third-party AI or math processing provider so the site can generate educational explanations. Do not submit private, confidential, sensitive, regulated, or personally identifying information inside calculator inputs. Math expressions should be limited to the problem you want to solve or review.
Contact Form Information
If you contact us, we may collect your name, email address, subject, message, IP address, browser user agent, and submission time. We use this information to respond, investigate corrections, prevent spam, and troubleshoot delivery issues.
How We Use Information
We use information to provide calculator results, show step-by-step explanations, display guide pages, maintain sessions, apply free or Premium limits, manage accounts, confirm email addresses, reset passwords, process Premium orders, respond to messages, prevent abuse, detect errors, improve reliability, protect the site, and comply with legal or operational requirements.
Legal Bases and Legitimate Interests
Depending on your location, processing may be based on your request for the service, consent, legitimate interests, legal obligations, or steps needed to manage an account or Premium order. Legitimate interests include keeping calculators available, preventing abuse, improving page quality, protecting accounts, measuring site performance, and responding to support or correction requests.
Request Logs and Retention
Technical logs may be stored for rate limiting, diagnostics, security, abuse prevention, service improvement, and accounting where applicable. Retention periods may vary based on operational needs. Contact messages, account records, order records, and security logs may be retained as long as needed for support, legal compliance, dispute handling, fraud prevention, or business records.
Cookies and Similar Technologies
The website may use cookies, sessions, local storage, or similar technologies for essential operation, consent preferences, CSRF protection, login state, security checks, analytics, advertising, and payment-related flows. For details, see the Cookie Policy.
Advertising and Analytics
If advertising or analytics tools are enabled, providers such as Google may use cookies or similar technologies to measure visits, serve ads, prevent fraud, and personalize or limit advertising according to their own policies and user controls. Availability may depend on region, consent settings, and browser configuration.
Third-Party Providers
We may use third-party providers for hosting, AI or math processing, security, email delivery, analytics, advertising, and payments. These providers process information only as needed for their services, subject to their own policies and agreements.
Sharing and Sale of Data
We do not sell calculator submissions or contact-form messages as standalone data products. Information may be shared with service providers that help operate the website, process requests, deliver email, secure traffic, analyze usage, serve ads, or process payments. We may also disclose information if required by law, to protect rights and security, or to investigate suspected abuse.
Your Choices
You can disable or delete cookies in your browser, decline non-essential tracking where controls are available, avoid submitting personal data in calculator inputs, and contact us to request review or deletion of contact-form messages associated with your email address where applicable. Some records may need to be retained for security, legal, accounting, or operational reasons.
International Visitors
The website may be accessed from different countries, and providers may process information in countries other than your own. Privacy rules can differ by location. By using the site, you understand that technical and service information may be processed where the website, hosting, security, analytics, advertising, AI, email, and payment providers operate.
Children
The website is an educational resource but is not directed to children under 13. We do not knowingly collect personal information from children under 13. If you believe a child submitted personal information, contact us so we can review the request.
Security
We use reasonable technical and organizational measures to protect records and limit access. No online service can guarantee complete security, so visitors should avoid submitting sensitive information through calculators or contact forms.
Contact and Updates
Privacy questions can be sent through the Contact Us page. We may update this Privacy Policy when the website, tools, providers, or legal requirements change.