Privacy

Privacy policy

Last updated: September 1, 2026.

Calculator inputs

Calculator math runs in your browser. Newly created share links encode calculator values after the URL fragment marker (#), which browsers do not send in HTTP requests or Referer headers. Anyone who receives a share link can still read the values in it, so do not include confidential information in scenario names or other free-text fields.

Optional copy, export, and sharing

Copy, CSV export, and share-link creation happen only when you choose them. Exported files and share links are created in your browser. Older query-string share links remain readable for backward compatibility.

Analytics and cookies

Cloudflare Web Analytics is enabled with automatic edge injection, excluding visitor data in the European Union. It provides aggregate page-view, visit, referrer, country, device, browser, page-path, and real-user performance metrics. Cloudflare describes this service as cookie-free and privacy-first: it does not use cookies or local storage to track people, does not fingerprint individuals for analytics, and does not log URL query strings. URL fragments are not sent in HTTP requests.

Separate product events, when a destination is configured, are limited to actions such as calculator view or start, guide-to-calculator clicks, sample-data load, export or share action, dataset download, workbook page view, workbook link interest, launch-notification click, checkout-start click, checklist interest, contact action, visits referred by a recognized AI assistant, and rounded LCP, INP, and CLS performance observations. Events may include the page path, calculator identifier, export type, link category, a fixed workbook offer identifier, a fixed AI-referrer category such as ChatGPT or Perplexity, or a performance metric name, rounded value, unit, and rating. The full referrer URL and its path or query string are not sent in these product events. Raw financial amounts, payment details, email addresses, and free-text calculator values are not included.

A same-origin Cloudflare Worker writes these sanitized product-event categories and rounded performance observations to Cloudflare Workers Analytics Engine. The stored data does not include IP addresses, user-agent strings, cookies, full referrer URLs, or calculator inputs. Cloudflare Zaraz may be used as an alternative delivery path when configured. Cloudflare processes data under its own terms. See Cloudflare's privacy policy.

The published application code does not include third-party advertising scripts or personalized-ad cookies as of August 20, 2026.

Contact

If you email Seller Math Hub to request a checklist, early workbook access, support, corrections, or deletion, the information you choose to send by email may be used to respond to that request. Do not send customer data, credentials, payment details, or confidential account information.

For privacy questions, corrections, or deletion requests, email ashish.sinha.studio@gmail.com.

Policy updates

This policy will be updated when new vendors, email tools, affiliate programs, advertising systems, cookies, or other data-processing features are added.