Privacy Policy
Last updated: October 12, 2026 | Effective Date: January 1, 2026
1. Our Core Principle: 100% In-Browser Privacy
At CalcHub (accessible from https://puretoolhub.com and https://calc.puretoolhub.com), user privacy is our foundational architectural commitment.
Unlike traditional web applications that upload your sensitive financial figures, revenue statements, or profit margins to remote servers, all calculations on CalcHub run 100% client-side inside your web browser using modern JavaScript. Your revenue data, Stripe fees, Shopify costs, and creator income inputs never leave your device.
2. Information We Collect
Because our calculators execute locally on your device, we do not require user accounts, registrations, or passwords to access our tools. We collect minimal technical information solely to ensure uptime, security, and performance:
- Log Files: Standard web server logs including IP addresses, browser user agent, referring pages, timestamps, and pages visited.
- Aggregate Analytics: Anonymous usage statistics via Google Analytics 4 (GA4) to evaluate popular tools and improve site performance. No Personally Identifiable Information (PII) is associated with these events.
- Direct Communications: If you contact us directly via email, we may retain your message, email address, and correspondence history to respond to inquiries and bug reports.
3. Third-Party Advertising & Google AdSense Disclosures
We use Google AdSense and third-party advertising partners to display advertisements when you visit our website. To comply fully with Google Publisher Policies and privacy regulations, we make the following disclosures:
• Use of Cookies & Web Beacons: Third-party vendors, including Google, use cookies to serve ads based on a user's prior visits to your website or other websites across the Internet.
• Personalized Advertising: Google's use of advertising cookies enables it and its partners to serve ads to users based on their visits to our sites and/or other sites on the Internet.
• Opting Out of Personalized Ads: Users may opt out of personalized advertising at any time by visiting Google's Ads Settings at https://www.google.com/settings/ads.
• Alternatively, you can opt out of a third-party vendor's use of cookies for personalized advertising by visiting www.aboutads.info.
4. Cookies and Web Storage
Cookies are files with small amounts of data stored on your device. We use cookies and browser local storage strictly for:
- Remembering your preferred interface language (English vs. Chinese).
- Serving relevant, non-intrusive advertisements in compliance with privacy regulations.
- Protecting against automated bot abuse and ensuring server infrastructure stability.
You can configure your browser to reject all cookies or notify you when a cookie is sent. However, certain web features may require cookies to function properly.
5. GDPR & CCPA Compliance (Data Subject Rights)
If you are a resident of the European Economic Area (EEA) or California (under the California Consumer Privacy Act / CCPA), you hold specific privacy rights:
- The right to access, rectify, or erase any personal information we may hold.
- The right to restrict or object to the processing of your data.
- The right to data portability.
- The right to withdraw consent at any time without affecting lawful prior processing.
Because we do not collect personal financial records or require accounts, we do not sell or share personal consumer data.
6. Children's Information
CalcHub does not knowingly collect any Personal Identifiable Information from children under the age of 13. If you believe that your child has provided personal information on our website, please contact us immediately and we will promptly remove such records.
7. Contact Us Regarding Privacy
If you have any questions, feedback, or data requests regarding this Privacy Policy, please contact our privacy compliance team: