Implementing a sticky "Add to Cart" button on mobile increased the add-to-cart rate by 8.7%. Discover how this change impacted other key metrics.
Mobile Bottom Sticky Add-To-Cart Button


If we add a sticky "Add to Cart" button, then conversions will increase because users can easily add items to their cart without scrolling.
What We Changed
- Added a sticky "Add to Cart" button on mobile product pages.
- Ensured the button was visible regardless of scroll position.
The Results
We dig through every data source to map what's actually broken. By the end, there's no confusion.
Add-to-cart rate change
Add-to-cart rate change
visitors
Key Learnings
- Increased add-to-cart rate shows users appreciated quick access to purchase options.
- Decline in conversion rate and revenue suggests potential issues with order completion.
- Reduced average order value and revenue per visitor indicate possible distraction or misalignment with user intent.
- Slight increase in bounce rate may reflect user frustration or navigation challenges.
Detailed results breakdown
Add-to-cart rate change
+6.8%
Average order value
-15.5%
Click-through rate change
-0.4%
Lift in conversion rate
-7.7%
Change in revenue per visitor
-22.1%
Start with 3 experiments.
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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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