Your Add to Cart button might be the reason mobile sales feel flat. On most Shopify product pages I audit, it sits under a tall image gallery, variant pickers and a wall of description. On a phone, shoppers have to scroll before they can even buy. The fix is small: a sticky Add to Cart bar. → Stays pinned to the bottom of the screen as shoppers scroll → Shows price and the selected variant, so there's no guessing → Only appears once the main button scrolls out of view → Built into the theme, so no extra app slowing the page down It's usually an hour or two of work, and it's one of the quickest wins I find in audits. Quick test: open your best-selling product on your phone. Can you tap Add to Cart without scrolling? Tell me in the comments. Still doing free mini-audits this week. Drop your store URL below and I'll send a short video with the first 3 fixes I'd make.