What the website uses
Calculator, help-filter and lesson state is held in page memory. Estimate review and edit links include only the calculation selections in the URL. Budget downloads are saved only when you choose to download them.
Hosting and security infrastructure may use technical mechanisms needed to deliver or protect the site. We do not load optional advertising, video or social-media embeds on these pages.
External services
A partner link opens an external referral network or provider; WhatsApp opens its own service. Their cookie and privacy policies apply there. Review their choices before sharing information.
Our referral count is sent by the server when a partner link is followed. It does not create a browser tracking cookie. The privacy notice describes the fields and retention periods.