Privacy Policy

Last updated: September 2025

1. Introduction

Welcome to Calcora. Your privacy is important to us. This Privacy Policy explains how we collect, use, and protect information when you visit our website and use our calculator tools. By accessing or using Calcora, you agree to the practices described in this policy.

2. Information We Collect

Calculator Inputs (Client-Side Only)

All values you enter into our calculators are processed entirely within your web browser. This data is never transmitted to our servers or any third party. Your calculations remain private and exist only on your device for the duration of your session.

Analytics Data

We use Google Analytics to understand how visitors interact with our site. This includes information such as browser type, pages visited, time spent on pages, referral sources, and general geographic region. This data is aggregated and does not personally identify you.

Cookies

We use cookies and similar technologies to maintain site functionality, analyze traffic, and serve advertisements. For full details, see the Cookies and Tracking section below.

3. How We Use Information

We use the limited information we collect for the following purposes:

  • Improving the design, accuracy, and performance of our calculators and website.
  • Analyzing aggregate usage patterns to prioritize new features and content.
  • Serving relevant advertisements through Google AdSense, which may use cookies to personalize ad content.
  • Detecting and preventing misuse or abuse of our services.

4. Cookies and Tracking

Essential Cookies

Some cookies are required for basic site operation, such as maintaining your preferences (e.g., dark mode) between visits. These cannot be disabled without affecting site functionality.

Analytics Cookies

Google Analytics uses cookies to collect anonymized usage data. These help us understand which pages are most popular and how users navigate the site. You can opt out by installing the Google Analytics Opt-Out Browser Add-on.

Advertising Cookies

Google AdSense uses cookies to serve ads based on your prior visits to our site and other websites. These cookies allow Google and its partners to serve ads based on your browsing history. You can manage ad personalization through Google Ad Settings.

5. Third-Party Services

Calcora uses the following third-party services:

  • Google AdSense — Serves advertisements on our site. Google may collect data about your ad views and interactions in accordance with Google's Privacy Policy.
  • Google Analytics — Provides anonymized traffic and usage data. Governed by Google's privacy policy linked above.
  • Vercel — Provides hosting and content delivery for our website. Vercel processes HTTP requests and may log standard access information (IP addresses, user agents) for operational and security purposes.

6. Data Storage

All calculator inputs and results are stored exclusively in your browser. We do not maintain any database of user calculations, and no calculator data is ever sent to a server. Once you close your browser tab, all data is gone. Our servers store no personal information related to calculator usage.

7. Your Rights

GDPR Rights (European Union)

If you are in the EU, you have the right to access, correct, delete, or restrict processing of your personal data. You may also object to data processing and request data portability. To exercise these rights, contact us using the information below.

CCPA Rights (California)

If you are a California resident, you have the right to know what personal information we collect, the right to request deletion, and the right to opt out of the sale of your personal information. Calcora does not sell personal information.

Opting Out

You can opt out of personalized advertising by visiting Google Ad Settings or by disabling cookies in your browser settings.

8. Children's Privacy

Calcora does not knowingly collect personal information from children under the age of 13. Our services are intended for a general audience and are not directed to children. If you believe a child has provided us with personal information, please contact us and we will promptly remove it.

9. Changes to This Policy

We may update this Privacy Policy from time to time to reflect changes in our practices or applicable laws. Any updates will be posted on this page with a revised "Last updated" date. We encourage you to review this policy periodically. Continued use of the site after changes are posted constitutes acceptance of the updated policy.

10. Contact Information

If you have questions or concerns about this Privacy Policy, please reach out to us at privacy@calcora.com.