Information stored on your device
Concrete Cal stores project names, measurements, assumptions, optional prices, notes, and selected purchase scenarios in this browser using IndexedDB. This local data is the V1 project system of record. It is not uploaded to a Concrete Cal account or synchronization service because no account or cloud-sync feature is offered.
Local projects remain until you delete them, clear this site's browser data, use a private-browsing session that expires, or the browser removes storage. Anyone with access to the same browser profile may be able to view the saved projects. Avoid entering sensitive personal information in project names or notes.
Information handled when you visit
The site is delivered through Cloudflare. Like other hosting and security providers, Cloudflare may process standard request information such as IP address, browser and device information, requested URL, timestamps, and security signals to deliver and protect the service. Concrete Cal does not use those records to attach calculator measurements to a named profile.
Privacy-focused aggregate web analytics may be used to understand page visits and performance. Product analytics, if introduced, are limited to coarse events such as route, calculator mode, unit system, and zone kind. They must not include raw dimensions, project names, notes, prices, share content, local storage identifiers, or keystrokes.
Advertising and consent
Concrete Cal uses Google AdSense to support advertising. Third-party vendors, including Google, use cookies to serve ads based on a visitor's prior visits to this site or other sites. Google's use of advertising cookies enables Google and its partners to serve ads based on those visits. Ad technology providers may also use device identifiers, IP-derived information, and browsing activity to deliver, limit, measure, and protect ads.
Where consent is legally required, an accessible consent choice will be presented before optional advertising storage is used. Depending on your location and consent choice, ads may be personalized or non-personalized. You can opt out of personalized advertising through Google's Ads Settings and manage cookies through your browser. Declining optional advertising storage will not prevent use of the calculator's core project-planning functions.
Sharing, retention, and your choices
Concrete Cal does not sell project measurements or notes. Information may be handled by service providers only to host, secure, measure, or support the site, or when disclosure is required by law. Third-party providers retain their own service data according to their published policies; local project data follows the browser-controlled retention described above.
You can remove saved projects inside the app or clear site data in your browser. You can control optional cookies through the consent interface when shown and through browser settings. Questions or privacy requests can be sent to [email protected]. Please do not email sensitive personal information or confidential project details.
Children and policy updates
Concrete Cal is a general DIY material-estimation tool and is not directed to children under 13. We do not knowingly ask children to provide personal information.
This policy may change when hosting, analytics, advertising, or product features change. The reviewed date on this page will be updated when a material revision is published.