AFTCO tested a sticky mobile add to cart button to increase add-to-cart rates. Learn how this change impacted user behavior.
Sticky Mobile Add-To-Cart Button
Goal
Add-to-cart rate
Result
+3.9% Add-to-cart rate
Category
Product Page (PDP)
Outcome
Winner
Before
After
If a persistent Add to Cart button is shown, then the add-to-cart rate will increase because users won’t need to scroll back up after reading long-form content.
What We Changed
- Made the add-to-cart button sticky on mobile.
- Added price to the button.
- Included a small cart icon on the button.
The Results
We dig through every data source to map what's actually broken. By the end, there's no confusion.
+6.2%
Lift in conversion rate
+4.4%
Change in amount of orders
+3.9%
Add-to-cart rate change
Key Learnings
- Persistent CTA increased visibility and accessibility.
- Showing price on the button reduced decision friction.
- Visual icon provided clear, instant action guidance.
- Simplified access enhanced mobile user experience.
Detailed results breakdown
Add-to-cart rate change
+3.9%
Average order value
-2.5%
Click-through rate change
+0.8%
Lift in conversion rate
+6.2%
Change in revenue per visitor
+3.6%
Free Trial
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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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