Contact
Tell me which
number is wrong
Write to the address below — this opens your mail app.
You do not need to include your income. Which screen you were on and what looked wrong is enough.
Especially welcome
- A price is wrong — a link to where you checked it helps most.
- A formula looks off — tell me what you entered and what came out.
- The layout is broken — your device and browser make it reproducible.
- Advertising and affiliate enquiries.
Privacy
A contact email is a mail you send yourself; this site does not intercept or store it. Nothing you type into the calculator is ever sent to a server. The details are in the privacy notice.
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