The Complete Guide to Conversion Rate Optimization
This is our complete guide to Conversion Rate Optimization. Everything we learned from 4,000+ experiments and €500M+ in tested revenue. The full methodology:
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What you get
metrics, hypotheses, prioritization, parallel testing, and
findings from 7 years of CRO work across 250+ Europe 1% DTC brands.
We put the full methodology in one document.
Here's what's inside:
Why optimizing for CR often kills revenue, and what to track instead
How SNOCKS went from €2.01 to €4.99 RPU
Category Entry Points
How a single badge added +€232,500/month for Giesswein
Why the same tactic produced opposite results on two different pages
Why test velocity matters more than individual test quality
From what metric to optimize, to how to structure a hypothesis, to why parallel testing produces 6x the compounding.
𝗪𝗮𝗻𝘁 𝘁𝗵𝗲 𝗳𝘂𝗹𝗹 𝗴𝘂𝗶𝗱𝗲?
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More resources

How we built the genome
Where the tests in the genome come from and how Apex learns from them.
Get the guideUrgency & Scarcity: what Ecom brands with €100M+ know that you don't
This is the framework behind €1.7M in conversion uplift zero extra ad spend. I see this on almost every audit of 7–9 figure brands:
Get the guideEcom Optimization Framework
We broke down 850+ funnels in 6 years. Here's what we learned... Most Ecom owners optimize in the dark.
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