Privacy policy
The take-off runs entirely in your browser, nothing you type is transmitted, and there are no accounts, no forms and no user database anywhere on this site.
What runs on these pages
All arithmetic executes locally. Our host collects aggregate, cookie-free analytics such as page views, country and browser family, which cannot follow you across sites. Infrastructure server logs recording IP address, user agent and timestamp exist briefly, as they do for every site on the internet.
Advertising
This site serves no advertising and carries no ad network code. If that ever changes, this page changes with it before the code goes live.
Write to the contact address and the thread is kept as long as it is useful and shared with nobody.
Effective 2026-08-05.