Bilby visits your online store every night in a real browser, the way a customer would: home, product, add to cart, cart and checkout, stopping before payment. When something breaks, such as a dead Add to cart button, a rejected discount code, a broken page or a missing tracking event, it emails you a plain-English report with the screenshot that proves it. Works on Shopify, WooCommerce and custom stores. Free first scan, no sign-up. Plans from US$29/month.