Privacy policy · Last updated May 2026
Short version: We use Google Analytics 4 for anonymous usage tracking. We serve display ads via Google AdSense / Ezoic / Mediavine — their privacy policies apply to ad-related data. We do not sell personal data. Calculator inputs are processed entirely in your browser — they are never sent to our servers.
All calculator computations happen entirely client-side in your browser using JavaScript. Your spend, revenue, and margin inputs are never transmitted to our servers or stored anywhere. The only data that leaves your browser is a shareable URL if you click "Share results" (this encodes your inputs in the URL — share it only with people you intend to share your numbers with).
We use Google Analytics 4 with IP anonymisation enabled. GA4 collects anonymous usage data: pages visited, session duration, device type, and approximate geographic region (city-level). No personally identifiable information is collected through analytics.
Our ad partners (Google AdSense, Ezoic, Mediavine) may set cookies to serve relevant ads and measure ad performance. You can opt out of personalised advertising at aboutads.info or via your browser's cookie settings.
You may request access to, correction of, or deletion of any personal data we hold. Contact: hello@roicalculator.online. We respond within 5 business days.
We may update this policy when our practices change. The "last updated" date above reflects the most recent revision.