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YouTube conversions +100% with no spend increase - case study cover
Ecommerce7 days post-change

YouTube conversions +100% with no spend increase

Excluded app inventory + tightened signal quality

Conversions lift

+100%

Spend change

Controlled

Conversion quality

Materially improved

Chapter 01

Three coordinated fixes

What we did

  1. 1

    Excluded all app inventory from the campaign

    Biggest impact came from a single decision. App inventory inflated volume but conversion signals were noisy. Learning skewed toward low-quality actions. Once apps were removed, conversion quality snapped back immediately.

  2. 2

    Built a conversion-focused video system

    Not just "more creatives." A conversion-led structure: strong high-impact hook in the opening seconds, clear product framing early, multiple video variations from the same core script. Goal wasn't views. It was qualified action.

  3. 3

    Layered a purchaser-based first-party audience

    Built a lookalike audience from all past purchasers. Layered it into the campaign as a signal input. Anchored YouTube's learning to real buyers and accelerated post-change stabilisation.

Originally published on the daily newsletter

Patrick wrote this case study live the week the numbers landed. Read the original on Beehiiv for the full context.

Read the original write-up

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