What happens in the browser
Calculator inputs are processed by the page you opened. CalcSpan does not upload, store or synchronize the dates, health details, substance names or calculation results you enter. Results and exports are generated on your device.
Site analytics
General site pages use Google Analytics and Microsoft Clarity to understand aggregate visits, page performance and broad interaction patterns. These services are not loaded on sensitive calculator routes. Analytics is not intentionally sent calculator field values, health details, substance names or result text.
Infrastructure data
Like any public website, CalcSpan’s hosting and security provider may process basic request data such as an IP address, user agent and request time to deliver, protect and troubleshoot the site. CalcSpan does not use that infrastructure data to reconstruct calculator inputs.
Sensitive tools
Health, recovery, substance, pregnancy and infant-feeding tools omit the site analytics scripts and use a neutral “Reminder” title in calendar exports by default. The result page keeps its caution language visible after calculation.
Sharing is deliberate
Copy, image saving and calendar export only happen when you choose the action. Exported files are generated on your device. Check the file contents before sharing them with another person.
What we do not promise
A local-first design does not turn a reference calculator into medical, legal, tax, safety or immigration advice. Keep the source panel beside the answer and verify high-risk decisions with the appropriate professional or official agency.
Contact
For privacy questions or site feedback, email [email protected].