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Built by a growth team, for the stores it runs
Growth Dept CRO is the testing platform of Growth Dept, the AI growth department for ecommerce brands. We built it to answer one question for the stores we work with: did this change earn more?
Where it came from
First a tool we ran for brands, now a platform any brand can use
Growth Dept first built the testing engine for the brands it runs, on each brand's own machine. On November 6, 2026 it moved to one hosted service at cro.growthdept.ai, with its own accounts, so a brand can use it with or without the rest of Growth Dept.
The same team builds the product and runs tests with it every week. Brands that work with Growth Dept get it with a link from their Growth Dept dashboard.
Product shot beats the current hero
Data looks sound · 92/100Revenue per visitor up 8.4% (95% interval +2.1% to +14.9%). Chance to beat the current hero: 97%.
Chance to beat control97%
How we build it
Three rules every result keeps
Shopify's orders decide
A purchase counts only when Shopify's own record backs it. A browser's claim never moves a result on its own.
Say what the data cannot
The verdict is written by fixed rules from the statistics, and says when a result is too early or the split looks wrong.
Know as little as we can
No shopper names, emails, phone numbers, addresses or IP addresses are stored. The assistant's agent sees aggregates only.
Growth Dept
The department behind it
Growth Dept runs growth for ecommerce brands with a team of AI employees in the brand's Slack, led by people who sign off on the work.
Visit growthdept.aiSister product
Growth Dept MTA
Multi-touch attribution from Growth Dept. Brands on both products send their events through the same Shopify pixel.
Visit Growth Dept MTAFind out what is worth testing on your store.
Book a 45-minute call with the Growth Dept team. We look at your store and your traffic, and tell you which tests to run first.