Privacy Policy

Introduction

CalcTune ("we," "us," or "our") operates the website calctune.com (the "Service"). This Privacy Policy explains how we collect, use, disclose, and protect your information when you use our Service.

By using CalcTune, you agree to the collection and use of information in accordance with this policy. If you do not agree with the terms of this Privacy Policy, please do not access or use the Service.

Information We Collect

CalcTune is designed to minimize data collection. We do not require user accounts, and you do not need to provide any personal information to use our calculators. All calculations are performed in your browser and are not transmitted to or stored on our servers.

Analytics Data: We use Google Analytics 4 (GA4) to collect anonymous usage statistics, including page views, device type, browser information, approximate geographic location, and how you interact with our Service. This data is aggregated and cannot be used to identify you personally.

Share URL Data: When you use our result-sharing feature, we temporarily store your IP address for rate-limiting purposes. This data is stored in Cloudflare Workers KV and automatically expires after one hour. The shared calculation parameters are stored as part of the URL but do not contain personally identifiable information.

Contact Information: If you contact us via email, we will receive your email address and any information you choose to include in your message. This information is used solely to respond to your inquiry.

Cookies and Tracking Technologies

We and our third-party partners use cookies and similar tracking technologies on our Service. Here is a detailed breakdown of the cookies and storage mechanisms in use:

Google Analytics: Uses _ga and _ga_* cookies to distinguish unique users and track sessions. These cookies are set by Google and are governed by Google's Privacy Policy. You can opt out of Google Analytics by installing the Google Analytics Opt-out Browser Add-on.

Google AdSense: Uses cookies to serve personalized advertisements based on your browsing history and interests. These cookies enable Google and its partners to serve ads based on your prior visits to CalcTune and other websites. You can opt out of personalized advertising by visiting Google's Ad Settings at https://adssettings.google.com.

Affiliate Tracking: Third-party affiliate programs (such as Amazon Associates) may set cookies when you click on affiliate links on our Service. These cookies are used to track referrals and attribute purchases. Each affiliate program has its own cookie policy.

Theme Preference: We store your light/dark mode preference using localStorage (key: calctune-theme). This data never leaves your browser and is not transmitted to any server.

Advertising and Affiliate Disclosure

CalcTune displays advertisements through Google AdSense to support the free operation of our Service. Google AdSense uses cookies and web beacons to serve ads that may be personalized based on your browsing behavior. Google, as a third-party vendor, uses cookies to serve ads on our Service based on your prior visits to our website and other sites on the internet.

You may opt out of personalized advertising by visiting Google's Ad Settings (https://adssettings.google.com) or by visiting the Network Advertising Initiative's opt-out page (https://optout.networkadvertising.org).

Some links on CalcTune are affiliate links, meaning we may earn a commission if you make a purchase through these links. Our affiliate partnerships include, but are not limited to, Amazon Associates. The use of affiliate links does not affect the price you pay for any product or service.

We only recommend or link to products and services that we believe may be useful to our users. However, we encourage you to conduct your own research before making any purchase. The presence of affiliate links does not constitute an endorsement of any product, service, or company.

This disclosure is made in compliance with the U.S. Federal Trade Commission (FTC) guidelines on endorsements and testimonials, as well as applicable international regulations.

Third-Party Services

Our Service uses the following third-party services that may collect information about you: Google Analytics (analytics.google.com) for anonymous usage analytics; Google AdSense (adsense.google.com) for displaying advertisements; Amazon Associates and other affiliate programs for affiliate marketing; Google Fonts (fonts.googleapis.com) for web font delivery; and Cloudflare for content delivery, hosting, and security.

Each of these services has its own privacy policy governing how it collects and uses data. We encourage you to review their respective policies.

How We Use Your Information

We use the information we collect for the following purposes: to provide and maintain our Service; to analyze usage patterns and improve user experience; to prevent abuse and ensure the security of our Service; to display relevant advertisements; and to respond to your inquiries when you contact us.

Data Sharing and Disclosure

We do not sell, trade, or rent your personal information to third parties. We may share anonymized, aggregated data with third-party analytics services as described above. We may also disclose your information if required to do so by law or in response to valid legal requests by public authorities.

Data Retention

Analytics data is retained according to Google Analytics' data retention settings. Share URL rate-limiting data (IP addresses) is automatically deleted after one hour. Contact form submissions are retained only as long as necessary to resolve your inquiry. We do not maintain any long-term databases of personal information.

Your Rights and Choices

Depending on your jurisdiction, you may have certain rights regarding your personal data:

European Economic Area (GDPR): You have the right to access, rectify, erase, restrict processing of, and port your personal data. You also have the right to object to processing and to withdraw consent at any time.

California (CCPA): You have the right to know what personal information is collected, to request deletion of your personal information, to opt out of the sale of personal information (we do not sell personal information), and to not be discriminated against for exercising your rights.

You can manage cookies through your browser settings. Most browsers allow you to block or delete cookies. You can opt out of Google Analytics using the Google Analytics Opt-out Browser Add-on. You can manage ad personalization settings at https://adssettings.google.com.

To exercise any of these rights, please contact us at [email protected].

Children's Privacy

Our Service is not directed to children under the age of 13 (or the applicable age of consent in your jurisdiction). We do not knowingly collect personal information from children. If you are a parent or guardian and believe that your child has provided us with personal information, please contact us so that we can take appropriate action.

International Data Transfers

Your information may be transferred to and processed in countries other than your country of residence, including the United States, where our third-party service providers operate. These countries may have data protection laws that differ from those in your jurisdiction. By using our Service, you consent to such transfers.

Changes to This Privacy Policy

We may update this Privacy Policy from time to time. Changes will be posted on this page with an updated "Last updated" date. Your continued use of the Service after any changes constitutes your acceptance of the revised policy. We encourage you to review this Privacy Policy periodically.

Contact Us

If you have any questions or concerns about this Privacy Policy or our data practices, please contact us at [email protected].