Privacy and local calculations
What the supplied site does with your input.
Vendor links in this edition are direct links. No paid placements are included. Comparisons describe published documentation, not hands-on test results. Commercial disclosure
No accounts, forms or uploads
This edition has no account registration, email capture, payment form, research-recording upload, participant database or third-party chat widget. Do not put private study data into a URL when linking to this site.
Calculations stay in the browser
The calculators use the values entered in the page. They do not transmit those values to a server, set tracking cookies or use browser storage. Download buttons create a file locally from the visible result.
Hosting and external links
The selected hosting provider may process normal request information such as an IP address and user agent. That is a hosting function, not a promise of anonymous network access. Following a vendor or source link takes you to another operator with its own practices.
Referral links
When a real affiliate link is configured, the destination may use its own attribution mechanisms. Such links are labelled. The default supplied edition uses direct vendor links and contains no affiliate tracking pixel.
Measurement in this edition
The application dispatches local browser events for integration testing and retains at most one hundred events in page memory. It sends no automatic analytics beacon. Adding external analytics, a contact service or a newsletter requires an accurate update to this page that describes the actual service.
Operator: The Plain Works Co.,Ltd.