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This Cookies Policy explains how VarianceCalc ("we", "us", or "our") uses cookies and similar storage technologies when you visit our website and use our statistical calculator tools.
1. What Are Cookies?
Cookies are small text files that are stored on your computer or mobile device when you visit a website. They are widely used to make websites work efficiently, provide a more personalized user experience, and supply analytical information to site owners. In addition to cookies, we may use local storage (HTML5 LocalStorage) for similar lightweight preferences.
2. How We Use Cookies & Local Storage
We prioritize your privacy. All statistical computations performed by VarianceCalc take place entirely client-side in your web browser. Your numerical dataset values are never uploaded, stored, or processed on our servers.
We use cookies and local storage exclusively for:
- Essential Functionality: Storing your cookie consent status (
cookie_consent) so you do not see the consent prompt repeatedly. - User Preferences: Remembering your calculator mode selection (Sample Variance vs. Population Variance) and light/dark theme preference across visits.
- Performance & Analytics: Anonymously monitoring page performance, page loads, and general traffic patterns to ensure high availability and responsiveness.
3. Categories of Cookies We Use
| Category | Purpose | Duration |
|---|---|---|
| Strictly Necessary | Saves your cookie consent acceptance and ensures smooth navigation. | Persistent (LocalStorage) |
| Preferences | Maintains your selected color theme and calculator interface settings. | Persistent (LocalStorage) |
| Performance / Analytics | Aggregates non-personally identifiable site statistics and error tracking. | Session / Up to 1 year |
4. Third-Party Services
We may use trusted third-party services such as content delivery networks (CDNs) or privacy-focused analytics to optimize loading speeds. These third parties may set cookies to deliver fonts, scripts, or security verifications in accordance with their respective privacy policies.
5. Managing and Disabling Cookies
Most web browsers automatically accept cookies, but you can modify your browser settings to decline cookies or alert you when a cookie is being placed. You can also clear existing cookies and local storage through your browser settings at any time:
- Google Chrome: Settings → Privacy and security → Cookies and other site data
- Mozilla Firefox: Settings → Privacy & Security → Cookies and Site Data
- Apple Safari: Preferences → Privacy → Manage Website Data
- Microsoft Edge: Settings → Cookies and site permissions → Manage and delete cookies
Please note that disabling necessary cookies or local storage may affect the convenience of remembering your preferred calculator preferences.
6. Changes to This Cookies Policy
We may update this Cookies Policy periodically to reflect technological changes, regulatory requirements, or enhancements to our services. Any updates will be posted on this page with an updated revision date.
7. Contact Us
If you have any questions or require further information regarding our use of cookies and data practices, please reach out to us at contact@variancecalculator.net.