Adding a free pair of socks to shoe purchases was tested to boost conversion rates. Discover the impact of this promotion on sales performance.
Free Socks Promotion


If we advertise a free bonus item like socks with purchase, then conversion rate will increase because the added perceived value motivates users to complete their purchase.
What We Changed
- Highlighted the free socks offer on the product detail page.
- Automatically added socks to cart with shoe purchases.
- Mapped sock size to shoe size for a seamless experience.
The Results
We dig through every data source to map what's actually broken. By the end, there's no confusion.
Average order value
visitors
Lift in conversion rate
Key Learnings
- Mobile users may require different promotion strategies.
- Proper mapping of additional items to main products enhances user experience.
- Value-added offers can positively impact conversion rates, especially on desktop.
- Due to mixed results, further testing was conducted.
Detailed results breakdown
Average order value
+0.0%
Lift in conversion rate
-0.6%
Change in revenue per visitor
-0.6%
Change in amount of orders
-0.8%
Revenue change
-0.80%
Start with 3 experiments.
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Get a taste of our service. We'll analyze your store, pinpoint low-hanging fruit, design, implement and test solutions to lift your conversion rate in 30 days.
Who qualifies?
30,000+ Monthly sessions.
Minimum traffic needed to run statistically significant tests.
Running on Shopify or Shopify Plus.
Our specialty - we don't work with other platforms.
Investing in paid traffic.
We work with stores committed to growth, not hobbyists.
Ready to invest in systematic CRO.
You understand testing takes time - no magic bullets.
Why free?
The best proof is results. Three real experiments show you exactly how we work and whether it drives revenue for your specific store. You keep everything - no strings attached.
Our bet
We're confident enough in our process to invest our time upfront. If the tests work, you'll see the value in continuing at $5,950/month. If not, you got free optimization work.
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Other experiments we've run

Cart
Redesigned mini cart boosts user engagement and checkout conversions
Discover how implementing a mini cart improved user engagement and increased checkout conversions by optimizing the shopping experience.
+3.6% Conversion rate

Search & Navigation
Enhanced search results with clickable categories increase user engagement and conversions
We revamped the search feature to boost product relevance and category discovery. Discover how these changes drove significant improvements in key metrics.
+1.2% Clickthrough rate

Product Page (PDP)
Moving Free Shipping Message Below Add to Cart
Adding a free shipping note under the Add to Cart button aimed to boost conversions by reducing purchase hesitation. See how this simple change impacted key metrics.
-0.2% Conversion rate