Privacy Policy

1. About MathHub Global

MathHub Global (mathhub.io) is a free online mathematics education platform created and maintained by Daniel Park, a mathematics educator based in Seoul, South Korea. MathHub provides textbook content, past exam papers, and study resources for students in Korea, the United States, the United Kingdom, Canada, and internationally. Our content covers curricula including Korean CSAT (수능), US AP Calculus / SAT, UK A-Level / IGCSE / IB, and Canadian mathematics courses.

2. Information We Collect

MathHub does not collect, store, or process any personally identifiable information (such as names, email addresses, or phone numbers) directly through its website.

However, the following third-party services integrated into our site may collect data:

• Google Analytics — collects anonymous usage data including page views, session duration, browser type, device type, and approximate geographic location (country/region level). This data is aggregated and cannot be used to identify individual users.
• Google AdSense — may use cookies to display advertisements relevant to your interests, based on your browsing activity across sites that use Google services.
• Desmos API — interactive graphing calculator embedded in our textbook pages. Desmos may collect usage data per their own privacy policy.

3. Cookies

Cookies are small text files placed on your device by websites you visit. MathHub itself does not set any first-party cookies. The following third-party cookies may be set when you use our site:

• Google Analytics cookies (_ga, _gid, _gat) — used to distinguish users and throttle request rate. These cookies expire after 2 years, 24 hours, and 1 minute respectively.
• Google AdSense cookies — used to serve personalized or non-personalized advertisements. These include cookies set by Google's advertising network (doubleclick.net).

You can control or delete cookies through your browser settings. Disabling cookies may affect the functionality of some features on our site. Most browsers allow you to refuse cookies or alert you when cookies are being sent.

4. How We Use Information

The analytics data we receive through Google Analytics is used solely to:

• Understand which content is most useful to students
• Improve the quality and coverage of our educational resources
• Monitor site performance and identify technical issues

We do not sell, trade, or transfer any data to third parties beyond what is described in this policy.

5. Advertising

MathHub uses Google AdSense to display advertisements. Google, as a third-party vendor, uses cookies to serve ads based on your prior visits to our website and other websites on the internet. Google's use of advertising cookies enables it and its partners to serve ads to you based on your visit to our site and/or other sites on the internet.

You may opt out of personalized advertising by visiting Google Ads Settings. Alternatively, you can opt out of third-party vendor cookies by visiting aboutads.info.

6. Third-Party Links

Our website contains links to official external resources, including College Board, Cambridge Assessment, AQA, Desmos, and other educational organizations. These links are provided for convenience and informational purposes. We are not responsible for the privacy practices of these external sites. We encourage you to review their privacy policies before sharing any personal information.

7. Children's Privacy

MathHub is designed to be a safe educational resource for students of all ages, including minors. We do not knowingly collect any personal information from children under the age of 13. If you are a parent or guardian and believe your child has provided personal information through our site, please contact us so we can take appropriate action.

8. Data Security

Since MathHub does not collect or store personal data on our own servers, data security risks to our users from our end are minimal. All content is served over HTTPS to ensure secure communication between your browser and our servers. We rely on Cloudflare Pages infrastructure for hosting, which provides industry-standard security measures.

9. Your Rights

Depending on your location, you may have rights regarding your personal data under applicable laws (such as GDPR in the European Union or CCPA in California). Since MathHub does not collect personal data directly, most of these rights apply to data held by our third-party services (Google Analytics, Google AdSense). You can exercise those rights directly with Google:

• Opt out of Google Analytics: Google Analytics Opt-out Browser Add-on
• Manage Google ad personalization: Google Account Privacy Controls

10. Changes to This Policy

We may update this Privacy Policy from time to time to reflect changes in our practices or for other operational, legal, or regulatory reasons. The "Last updated" date at the top of this page will always reflect the most recent revision. Continued use of our site after any changes constitutes your acceptance of the updated policy.

11. Applicable Law

This Privacy Policy is governed by generally accepted international standards for online privacy. We comply with applicable privacy laws in the jurisdictions where we operate, including the EU General Data Protection Regulation (GDPR) and the California Consumer Privacy Act (CCPA) to the extent applicable.