ROAS Calculator
Your real ROAS in 5 minutes.
Paste 3 months of Meta + Google spend and revenue. We show you what last-click attribution claims, what Bayesian attribution actually measures, and the gap between them — with 95% credible intervals on the real number.
Your last 90 days, by channel
Enter your spend and platform-attributed revenue per channel. Leave channels you don't use blank. All math runs in your browser — nothing is sent anywhere.