What happens in the browser
Calculator inputs are processed by the page you opened. The site does not need to send, store or synchronize the dates, health details, substance names, or calculation results you enter.
Sensitive tools
Health, recovery, substance, pregnancy and infant-feeding tools use a neutral “Reminder” title in calendar exports by default. The result page also keeps the same caution language visible after calculation.
Sharing is deliberate
Copy, text download 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.