1. Who We Are
ExpressionCalculator.com ("we", "our", or "us") operates the website at https://expressioncalculator.com, a free online tool that evaluates mathematical expressions. This Privacy Policy explains what information we collect, how we use it, and your rights regarding that information.
2. Information We Collect
We do not require you to create an account or provide any personal information to use this Site. We collect two categories of data:
- Usage data (via Google Analytics): When you visit the Site, Google Analytics automatically collects anonymised information including your approximate geographic location (country/city level), browser type, device type, pages visited, time spent on pages, and referring URLs. This data is aggregated and does not identify you personally.
- Locally stored data: Your calculation history is stored exclusively in your browser's
localStorage. This data never leaves your device and is not transmitted to our servers.
3. Cookies
We use cookies only through Google Analytics, which sets cookies to distinguish users and measure Site usage. These are analytics cookies and do not track you across other websites for advertising purposes. You can opt out of Google Analytics tracking by installing the Google Analytics Opt-out Browser Add-on.
We do not use advertising cookies, tracking pixels, or any other third-party tracking technologies beyond Google Analytics.
4. How We Use Information
The anonymised analytics data we collect is used solely to understand how visitors use the Site so we can improve it, identify technical issues, and measure the popularity of different features. We do not sell, rent, or share your data with any third parties for commercial purposes.
5. Google Analytics
This Site uses Google Analytics, a web analytics service provided by Google LLC. Google Analytics uses cookies to help analyse how users interact with the Site. The information generated (including your IP address, which Google may truncate within the EU) is transmitted to and stored by Google. Google's use of data is governed by the Google Privacy Policy.
6. Data Retention
Google Analytics data is retained for 14 months before automatic deletion. Locally stored calculation history remains in your browser until you clear it using the "Clear" button in the calculator, or until you clear your browser's local storage.
7. Children's Privacy
This Site does not knowingly collect personal information from children under the age of 13. The calculator is an educational tool suitable for all ages, but we do not direct the Site to children or knowingly collect data from them.
8. Your Rights
Depending on your location, you may have rights under applicable privacy laws (including GDPR for EU residents and CCPA for California residents). Since we do not collect personal data directly, most of these rights are satisfied by default. If you have any concerns, please contact us.
9. Third-Party Links
This Site may contain links to external websites. We are not responsible for the privacy practices of those sites and encourage you to review their privacy policies.
10. Changes to This Policy
We may update this Privacy Policy from time to time. When we do, we will revise the "Last updated" date at the top of this page. We encourage you to review this policy periodically.
11. Contact Us
If you have questions about this Privacy Policy, please contact us via our Contact page.