Local calculator state

The calculator stores recent history, the current expression, and consent choices locally in the browser so the practice experience can persist on the same device.

This starter build does not rely on a custom backend to process calculator inputs by default.

Advertising and optional categories

The website includes Google AdSense account markup and an ads.txt file for monetization readiness. Optional analytics and advertising categories remain opt-in in the local consent interface.

If the production website serves users in the EEA, UK, or Switzerland, advertising consent should follow current Google requirements before personalized ads are used.

Educational scope

This is an educational practice website, not an official calculator vendor, school platform, or exam authority.

Privacy questions may be sent to contact@ti84plusce.online.