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
Start with 3 experiments.
Zero cost.
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.
Limited spots
We take only 4 free trials monthly to maintain quality. Each trial gets our full attention and expertise. If you qualify, secure your spot before this month fills up.
Other experiments we've run
Product Page (PDP)
Sticky Mobile Add-To-Cart Button
AFTCO tested a sticky mobile add to cart button to increase add-to-cart rates. Learn how this change impacted user behavior.
+3.9% Add-to-cart rate
Product Page (PDP)
Personalized PDP Layout for New Visitors
Personalizing product pages for new visitors aimed to boost conversion rates. Discover the impact on user engagement and sales.
+1.9% Conversion rate
Homepage
Science-backed Summary
Added a summary of scientific findings to the homepage to reduce bounce rates and increase product page clicks.
-12.4% Conversion rate