Contact
Questions, corrections and suggestions are genuinely welcome — reader reports are the main reason tools on this site get better. Write to us and you will get a reply from a person.
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Corrections, tool suggestions, questions about a result, partnership and press enquiries.
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Response time
Messages are read by the site editor and answered within two working days in most cases. Reports of a wrong calculation are prioritised over everything else.
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Publisher
apputil.com is published and maintained by Rodrigo Brito, Brazil. Business correspondence can be sent to the address above and a postal address will be provided on request.