Contact
Corrections, bug reports and requests for a tool that does not exist yet are all welcome. A reported error on a calculator gets looked at: those matter more than feature requests.
Please include the URL of the page and, for a calculator, the inputs you used and the number you expected. That is usually enough to reproduce a problem in one go.
Who you are writing to
TNAADO Inc
1050 King St W
Toronto, Ontario M6K 0C7
Canada
What this address is not for
The tools have no accounts and nothing to cancel. Link-exchange and guest-post offers are not read.
Elsewhere
tnaado.ca: the firm.
service.tnaado.ca: corporate and consulting.
ethandaley.dev: the person who builds this.