Privacy Policy

We collect minimal information necessary to operate a modern website. Here is exactly what we collect and how:

a. Automatically Collected Information (Analytics)

When you visit NOTACALCulator, we automatically collect certain information through Vercel Analytics and other privacy-respecting analytics tools. This includes:

• Pages visited and the time and date of your visit
• Referring website or link that brought you to our site
• Browser type, version, and language preferences
• Device type, operating system, and screen resolution
• Approximate geographic location (country/city level, never precise coordinates)

This data is aggregated and anonymized. We cannot identify individual visitors from this information. We use it solely to understand traffic patterns, improve our content, and ensure the site performs well across devices and regions.

b. Advertising Cookies (Google AdSense)

We use Google AdSense to display advertisements on our website. Google AdSense uses cookies and web beacons to serve ads based on your prior visits to our website or other websites. These cookies enable Google and its partners to serve ads to you based on your browsing history and interests.

Specifically, Google AdSense may use:

• DoubleClick cookies: These are placed by Google to serve and personalize ads. The DoubleClick cookie enables Google and its partners to serve ads based on your visits to our site and/or other sites across the internet.
• Third-party vendor cookies: Other ad networks and advertisers may place cookies through our site as part of the ad serving process.

c. Calculator Input Data

We do not collect, store, or transmit calculator inputs. All calculations on notAcalculator are performed locally in your browser using JavaScript. When you enter numbers into a calculator, that data stays on your device. We never send your calculations to a server, save them, or associate them with your identity. This is a core design principle of our platform.

d. Information You Voluntarily Provide

We do not require registration, account creation, or email sign-up to use any calculator on this site. If you contact us via email for support or inquiries, we will only use the information you provide (your email address and message) to respond to you. We do not add this information to marketing lists or share it with third parties.

We use the collected information for the following purposes:

• To operate and maintain the Service: Ensuring our website functions correctly, loads quickly, and remains secure.
• To improve our content: Analyzing aggregated traffic patterns helps us understand which calculators and features are most useful so we can prioritize development.
• To serve relevant advertisements: Google AdSense uses cookies to deliver ads that may be relevant to your interests. This revenue allows us to keep all calculators free for everyone.
• To detect and prevent abuse: Monitoring traffic patterns helps us identify and block malicious activity, such as denial-of-service attacks or scraping attempts.
• To comply with legal obligations: When required by applicable law or valid legal process.

We partner with Google AdSense to display advertisements. Google AdSense is a third-party ad-serving platform that uses cookies and other tracking technologies to deliver ads, measure their performance, and prevent fraud.

How Google Uses Your Data

When you visit a page on notAcalculator that displays ads, Google may place cookies on your browser. These cookies allow Google to:

• Serve ads based on your previous browsing activity (interest-based advertising)
• Limit the number of times you see a particular ad
• Measure the effectiveness of ad campaigns
• Detect and prevent click fraud

The DoubleClick cookie (used by Google AdSense) enables Google and its partners to serve ads based on your visits to our site and/or other sites on the internet. Other third-party ad networks and advertisers may also use cookies to track your browsing activity across websites.

Your Choices Regarding Advertising Cookies

You have several options to control interest-based advertising:

• Google Ads Settings: You can opt out of personalized advertising by visiting Google's Ads Settings at google.com/settings/ads.
• Your AdChoices: You can opt out of interest-based advertising from participating companies through the Digital Advertising Alliance at optout.aboutads.info.
• Network Advertising Initiative: Opt out of multiple ad networks at optout.networkadvertising.org.
• Browser settings: You can configure your browser to block all cookies, block third-party cookies, or delete cookies after each session. Note that disabling cookies may affect the functionality of some features on our site and many others across the web.

Google Privacy Policy

For more information about how Google collects, uses, and protects your data, please review Google's Privacy Policy at policies.google.com/privacy. You can also learn more about Google's advertising practices at policies.google.com/technologies/ads.

If you are located in the European Economic Area (EEA), you have specific rights under the General Data Protection Regulation (GDPR). We are committed to upholding these rights:

• Right to access: You can request a copy of the personal data we hold about you.
• Right to rectification: You can request correction of inaccurate data.
• Right to erasure ("Right to be forgotten"): You can request deletion of your personal data. Since we collect minimal data, exercising this right typically involves clearing cookies and ceasing use of the site.
• Right to restrict processing: You can request that we limit how we process your data.
• Right to data portability: You can request a copy of your data in a machine-readable format.
• Right to object: You can object to our processing of your data, including processing for advertising purposes.

Our legal basis for processing your data is your consent (for cookies and analytics), our legitimate interest in operating and improving the Service (for aggregated analytics), and compliance with legal obligations.

We do not use automated decision-making or profiling that produces legal effects concerning you.

If you believe your data protection rights have been violated, you have the right to lodge a complaint with your local data protection authority.

If you are a California resident, the California Consumer Privacy Act (CCPA) grants you specific rights regarding your personal information:

• Right to know: You can request disclosure of the categories and specific pieces of personal information we have collected about you in the past 12 months.
• Right to delete: You can request deletion of personal information we have collected from you.
• Right to opt out of sale: You have the right to direct us not to sell your personal information. As stated above, we do not sell personal data. However, if you wish to opt out of the sharing of cookie identifiers through Google AdSense for cross-context behavioral advertising, please follow the opt-out instructions in the advertising cookies section above.
• Right to non-discrimination: We will not discriminate against you for exercising any of your CCPA rights.

To exercise your CCPA rights, please contact us using the information in the Contact section below. We will respond to your request within the time frame required by law.

Data retention:Aggregated analytics data is retained indefinitely in anonymized form. We do not maintain records that can be linked to individual users. Cookie data is stored on your device and retained according to each cookie's expiration period, as set by Google and other third-party services.

Data security: We use industry-standard security measures to protect our website and any data processed through it. Our site is served over HTTPS (TLS encryption) to ensure all communications between your browser and our servers are encrypted. We regularly update our dependencies and follow security best practices in our development workflow.

However, no method of electronic storage or transmission over the internet is 100% secure. While we strive to protect your data, we cannot guarantee absolute security.

Our Service is not directed at children under the age of 13 (or 16 in the European Economic Area). We do not knowingly collect personally identifiable information from children. If you are a parent or guardian and believe your child has provided us with personal information, please contact us. If we become aware that a child has provided us with personal information, we will delete it promptly.

We may update this Privacy Policy from time to time to reflect changes in our practices, legal requirements, or operational needs. We will notify you of any material changes by posting the new Privacy Policy on this page and updating the "Last updated" date at the top.

We encourage you to review this Privacy Policy periodically for any changes. Changes to this Privacy Policy are effective when they are posted on this page.