Talk to the people who build this.
Feature requests, corrections to the maths, partnership enquiries and data questions all land in the same inbox. Compose your message below and it opens pre-filled in your own email client.
If you have found an error in a formula, write “correction” in the subject line and it moves to the top of the queue. We would rather be right than comfortable.
Before you write
Questions we answer quickly
- How a specific figure is derived, and which assumptions sit behind it.
- Whether a calculator handles a cost structure we have not modelled, such as subscription billing or wholesale tiers.
- Corrections. If a formula is wrong, tell us and we will fix it and say so.
- Advertising and sponsorship enquiries for placements on this site.
Questions we cannot answer
We do not provide financial, tax, accounting or investment advice, and we cannot review your accounts or recommend how much to spend. Every tool here is a model. It gives you arithmetic, clearly shown, so you can make your own decision with better information.
Privacy requests
This site does not collect the figures you enter into any calculator. Advertising cookies set by Google and its partners are governed by their own policies, and you can opt out of personalised advertising in Google Ads Settings. For access, deletion or opt-out requests under the GDPR or CCPA, write to contact@roasgenius.com with “privacy request” in the subject line and we will respond within the statutory window.