Sticky ATC bar

Before

After

Hypothesis

Adding a sticky ATC bar on mobile will increase mobile conversion rate by eliminating scroll-back friction for customers who reach purchase intent mid-page or below the fold, making the buy action immediately accessible at any point in the browsing session.

What we learned

Winner: the sticky ATC bar lifted CVR ~+4.1% relative (1.53% to 1.59%) and RPV ~+4.8% ($2.85 to $2.98), adding an estimated $2.8M in annualized revenue.