Cost of Saving

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Found something wrong, something useful, or something missing? Tell me. I read every one.

Give an email only if you would like a reply. It is never shown and never kept on the site.

What happens to what you write

  • It is sent to me by email when you press Send, and not before.
  • If you do not tick "you may show my comment", the email is the only copy. Nothing is kept on the site.
  • If you do tick it, the comment waits until I publish it or decline it. After 60 days it is deleted by itself.
  • Your email address is never shown and never kept on the site.
  • The form does not record your device or your network address.

The calculators work differently: nothing you type into them is sent anywhere.