Cookie Policy

What Are Cookies

Cookies are small text files stored on your device when you visit a website. They help websites remember your preferences, understand how you interact with pages, and deliver relevant content. Cookies may be session cookies (deleted when you close your browser) or persistent cookies (remain on your device for a set period or until manually deleted).

Cookies can be first-party (set by NumbrWiz) or third-party (set by trusted service partners like Google). Our cookie usage is designed to be minimal, transparent, and respectful of your privacy.

How NumbrWiz Uses Cookies

NumbrWiz uses cookies for four primary purposes: essential site functionality, performance measurement, advertising support, and optional functional preferences. We do not use cookies to collect personally identifiable information without your explicit consent. All calculator computations run client-side in your browser, and no calculation data is stored or transmitted via cookies.

Essential Cookies

These cookies are necessary for NumbrWiz to function properly. They enable core features such as dark mode memory, search overlay functionality, and security measures. Without these cookies, certain parts of the site would not work correctly.

• Theme preference: Stores your light/dark mode selection so your preference persists across visits.
• Session integrity: Maintains a secure browsing session while you use our calculator tools.
• Consent record: Remembers your cookie consent choices for future visits.

Performance & Analytics Cookies

We use analytics cookies to understand how visitors interact with NumbrWiz — which calculators are most popular, how users navigate between tools, and where we can improve the experience. All analytics data is aggregated and anonymized.

• Page view tracking: Helps us identify the most-used calculators and optimize performance.
• Error monitoring: Detects calculation errors or UI issues so we can fix them quickly.
• Device insights: Shows us which devices and screen sizes visitors use, helping us optimize responsiveness.

Advertising Cookies

NumbrWiz displays advertisements via Google AdSense to keep our calculator tools free for everyone. Advertising cookies help Google serve ads that are more relevant to your interests and measure ad performance.

• Interest-based advertising: Google may use cookies to build interest categories and show relevant ads across the web.
• Frequency capping: Cookies help limit how many times you see the same advertisement.
• Ad performance measurement: Cookies allow Google to measure ad views, clicks, and conversion data in aggregate.

You can learn more about how Google uses cookies in advertising at Google's Advertising Policies.

Google AdSense Cookies

As a Google AdSense partner, NumbrWiz allows Google to place cookies on your device for advertising purposes. Google's use of advertising cookies enables it and its partners to serve ads based on your visit to NumbrWiz and other sites on the Internet.

• Third-party vendors, including Google, use cookies to serve ads based on a user's prior visits to NumbrWiz.
• Google's use of advertising cookies enables it and its partners to serve ads to our users based on their visit to our site and other sites on the Internet.
• Users may opt out of personalized advertising by visiting Google Ads Settings.
• You can also opt out of third-party vendor cookies for personalized advertising at www.aboutads.info.

Functional Cookies

Functional cookies allow NumbrWiz to remember choices you make and provide enhanced, more personal features. These cookies are optional and can be disabled, though some convenience features may be unavailable.

• Recently used calculators: Remembers which tools you accessed for quick return visits.
• Search preferences: Stores your search history within NumbrWiz for faster access to frequently used calculators.
• Layout preferences: Preserves any display or interaction choices you make on the platform.

Managing Cookies

You have full control over cookie settings on NumbrWiz. You can manage your preferences through our on-site consent banner, your browser settings, or third-party opt-out tools.

Browser Cookie Controls

Most web browsers allow you to control cookies through their settings. Here is how to manage cookies in popular browsers:

• Google Chrome: Settings → Privacy and Security → Cookies and Other Site Data
• Mozilla Firefox: Options → Privacy & Security → Cookies and Site Data
• Safari: Preferences → Privacy → Cookies and Website Data
• Microsoft Edge: Settings → Cookies and Site Permissions → Manage Cookies

You can also use your browser's private or incognito mode to limit cookie storage during individual browsing sessions. Note that blocking all cookies may affect the functionality of some NumbrWiz features.

Cookie Consent

When you first visit NumbrWiz, a cookie consent banner appears clearly explaining our cookie usage. You can:

• Accept All: Enable all cookie categories for the full NumbrWiz experience.
• Reject Non-Essential: Only allow essential cookies required for site functionality.
• Customize: Choose which specific cookie categories to allow or block.

Your consent preferences are stored and honored for up to 12 months, after which you will be prompted to renew your choices. You can change your preferences at any time by clearing your browser cookies and revisiting our site.

Data Protection & Privacy

NumbrWiz is committed to protecting your data. All calculator computations run entirely in your browser — no calculation inputs or results are transmitted to our servers or stored via cookies. Our cookie usage aligns with:

• GDPR: We obtain clear consent before setting non-essential cookies and respect your right to withdraw consent.
• CCPA: We provide transparency about data collection and honor opt-out requests for cookie-based tracking.
• ePrivacy Directive: We comply with EU cookie consent requirements.

For full details, please read our Privacy Policy.

Children's Privacy

NumbrWiz does not knowingly collect personal data from children under the age of 13. Our cookie practices do not target children, and we do not use cookies to profile or track minors. Many of our calculator tools, such as GPA and grade calculators, are designed for educational use by students of all ages. If you believe a child has provided personal information through cookie-based tracking, please contact us immediately.

Updates to This Policy

We periodically review and update this Cookie Policy to reflect changes in our practices, technology, or legal requirements. When we make material changes, we will update the "Last Updated" date at the top of this page and display a notice on our homepage for a reasonable period. We encourage you to review this policy regularly to stay informed about how we use cookies.