You enter numbers, not files. Calculations run in your browser.
Last updated: October 25, 2026.
Calculator inputs
The calculators do not upload your files, ask for file access, or send calculator input through a calculation API. The application has no accounts or database of calculation histories, and includes no advertising scripts or application-level analytics. The application does not use local storage to save inputs.
Shared links
When you choose to share a scenario, its numerical settings may be included in the URL. Anyone with that link can read those settings. URLs can also appear in browser history, copied messages, and hosting request logs when opened. Do not put confidential information into a shared link. Sharing a link is optional; a copied result or downloaded text file stays under your control until you send it elsewhere.
Hosting and ordinary web requests
The site is designed for hosting on Cloudflare Pages. Visiting a hosted page involves ordinary network requests. Cloudflare may process technical information such as IP address, requested URL, browser information, and security or access-log data to provide and protect hosting. This is distinct from calculation processing in your browser. Consult Cloudflare's privacy policy for its practices. We do not promise that infrastructure collects no logs or that it retains them for a particular period.
Cookies and external links
This launch application does not set advertising or analytics cookies. Hosting security features may operate separately from application code. Links to external documentation take you to other organizations' sites, whose privacy practices apply there. We do not control those sites.
Feedback and downloaded files
The contact page provides a downloadable feedback template, not a submission form. Downloading it does not send us feedback. The same applies to an exported calculation plan: its contents are generated locally for you to keep. Review a file before sharing it.
Future changes
Advertising is not active. If advertising, analytics, accounts, or another data-collecting service is introduced, this notice and any necessary consent controls must be updated before activation. An aspiration to support the project with ads is not a statement that Google AdSense or another network currently receives data from this site.
For the current feedback-channel status, see Contact.