F12 Labs ‑ Cart Sync Pro

CartSync Pro automatically saves and restores customer carts across all devices for logged-in shoppers. When customers add items on their phone and later visit on desktop, their cart is waiting for them. The app syncs every cart change in real time using customer metafields, working silently in the background with no customer action required. Merchants get a built-in Cart Helper tool to manually manage and assign customer carts for support cases. The app includes idle detection that syncs carts automatically when customers return after inactivity. Customizable cart restoration notifications let you control position, color, and timing. Works with any Shopify theme with simple one-click setup from the theme editor—no coding needed. Just enable the app block and start providing seamless cross-device cart sync for your customers.