Privacy Policy
Written in plain language on purpose. If anything here is unclear, that's a bug — treat it as one.
Does what I type into a calculator leave my browser?
For the calculation itself: no. Every number you enter — income, estate value, loan balance, and so on — is processed entirely in JavaScript running in your own browser.DueMATH does not send your calculator inputs to any server to compute your result, and there's no account or login, so there's nothing tied to your identity to begin with.
The one exception is the optional “Explain this result in plain English” feature. If you click it, your calculator inputs and the resulting numbers are sent to our server, which forwards them to Anthropic's Claude API to generate a plain-English explanation. That request is not stored in a database on our end. It is subject to Anthropic's own data handling terms as the API provider. If you'd rather not send anything anywhere, simply don't click that button — every calculator works fully without it.
What do you collect?
Aggregate, non-identifying usage analytics: which pages are viewed, which calculator was completed, and whether the AI explanation feature was opened. These events do not include the dollar amounts, state, or other values you entered — only that a calculation of a given type happened. We don't use tracking cookies, and we don't sell or share data with data brokers.
Ads
DueMATH may display ads (via Google AdSense) to keep the calculators free. If enabled, AdSense may use cookies for ad personalization per its own policies — see Google's advertising policy for details. Ad placements are positioned to never sit between a Calculate button and your result.
Changes to this policy
If what DueMATH collects or sends changes, this page will be updated to reflect it accurately — the goal is that this page never overstates our privacy protections or understates what actually happens with your data.