D2C / E-commerce
Creative testing systems that scaled ROAS profitably.
Fieldstone needed to scale Meta Ads spend without eroding margins. A structured creative testing cadence and clean Conversions API data got them there.
4.2x
Return on ad spend
+65%
Ad spend scaled
-18%
Blended CAC
The challenge
Fieldstone wanted to scale Meta Ads spend to hit an aggressive growth target, but every prior attempt to increase budget had eroded margins — new spend chased diminishing returns because creative and audience decisions weren't backed by reliable signal.
Our approach
We stood up server-side Conversions API tracking so campaign data held up as iOS attribution degraded, then ran a structured creative testing cadence — new concepts validated on a fixed cycle against blended CAC, not vanity metrics — before scaling any single ad set.
“They think in unit economics, not impressions. Every recommendation was tied back to what it meant for our margins — that's rare in performance marketing.”
Marcus AdeFounder, Fieldstone