Privacy policy

CalcLearn has no accounts, no sign-ups, and collects no personal information. You can use every page and tool on this site without telling us anything about yourself.

Analytics

We use privacy-respecting analytics to understand which pages help students: Vercel Analytics (anonymous, cookie-free page views) and, if enabled, Google Analytics 4 configured with IP anonymization and with advertising features and Google Signals disabled. None of this data identifies you personally, and none of it is used for advertising or profiling.

First-party Learn Network analytics also records completed page engagement samples, public route paths, safe action names, embed loads, a coarse device class and country, and external referrer or embed-parent hostnames. A random identifier groups events only within one browser tab and is stored in session storage. It does not record IP addresses, query strings, URL fragments, answers, scores, calculator inputs, assignment payloads, uploaded files, or personal information.

If display advertising is enabled on selected long-form pages, the ad provider may use cookies or similar technologies to measure and deliver ads. Ads are separately gated, do not receive calculator values or interactive state, and will not be enabled until the required consent and audience controls are in place. Calculators, visualizers and practice pages remain free of display ads.

Local storage

Interactive tools may store settings (like a chosen function or slider position) in your own browser's local storage so the page remembers where you left off. That data never leaves your device.

Contact

Questions about this policy can be sent through the contact information on the About page of EconLearn (econlearn.org), our sister site.

Last updated August 2026.