Contact
RetrofitROI is built by a small independent team. Corrections from people who actually use the tools are one of the main ways the site stays accurate.
Corrections and math questions
Send a note to help@retrofitroi.com if a result looks wrong, a source needs updating, or a page is broken. Include the tool name and, where relevant, the inputs you used, so the issue can be reproduced and checked against its source.
Privacy questions
Questions about how RetrofitROI handles data can go to privacy@retrofitroi.com, or you can read the privacy page first for the direct answer.
General questions
Anything else, including accessibility issues and general feedback, can go to help@retrofitroi.com as well.