Last updated: 5 July 2025
graphingcalculate.com ("we", "us", or "our") is committed to protecting your privacy. This Privacy Policy explains what information we collect, how we use it, and your rights in relation to it. We have built this tool with a privacy-first philosophy — you do not need to create an account or provide any personal information to use the calculator.
1. Information We Collect
Information You Provide
We do not require you to create an account or provide any personal information such as your name, email address, or payment details. The graphing calculator is entirely free and anonymous.
Automatically Collected Information
When you visit graphingcalculate.com, our web hosting provider may automatically collect standard server log information, including:
- Your IP address (anonymised)
- Browser type and version
- Operating system
- Referring URL
- Pages visited and time spent
- Date and time of access
This information is used solely for operating and improving the service and is not linked to any personally identifiable information.
Local Storage
We use your browser's localStorage to store your theme preference (light/dark mode). Your graph state is stored in the page URL as a hash — no server-side storage of your equations or graphs occurs.
2. Cookies
graphingcalculate.com does not use tracking cookies or advertising cookies. We may use essential cookies strictly necessary for the website to function correctly. We do not use third-party analytics cookies or share any cookie data with third parties.
3. How We Use Your Information
The limited technical data we collect is used to:
- Operate and maintain the website
- Monitor and improve performance and reliability
- Detect and prevent security incidents
- Understand aggregate usage patterns to improve features
We do not sell, trade, rent, or otherwise share your personal information with third parties for marketing purposes.
4. Third-Party Services
We use the following third-party services that may process technical data:
- Hosting provider — for serving web content (standard server logs apply)
- jsDelivr CDN — for serving fonts; see jsDelivr Privacy Policy
We do not use Google Analytics, Facebook Pixel, or any advertising networks.
5. Data Retention
Server log data is retained for a maximum of 30 days and is then automatically deleted. We do not store any user-generated content (your equations or graphs) on our servers.
6. Your Rights
Depending on your location, you may have the following rights:
- The right to access any personal data we hold about you
- The right to request deletion of your personal data
- The right to object to processing of your personal data
- The right to data portability
To exercise any of these rights, please contact us at privacy@graphingcalculate.com.
7. Children's Privacy
graphingcalculate.com is suitable for users of all ages, including children. We do not knowingly collect personal information from children under the age of 13. Since no account registration or personal data is required to use the service, children can use it safely and anonymously.
8. Changes to This Policy
We may update this Privacy Policy from time to time. We will notify users of material changes by updating the "Last updated" date at the top of this page. Continued use of the service after changes constitutes acceptance of the revised policy.
9. Contact Us
If you have any questions about this Privacy Policy, please contact us at privacy@graphingcalculate.com or via our Contact page.