CartSync ‑ Persistent Cart

Your customers' carts follow them — phone, laptop, or tablet. No lost carts, no re-adding items.

CartSync saves a logged-in customer's cart to their account and restores it when they sign in from another device or come back later. Choose merge mode to combine a saved cart with the current one, or replace mode to swap in the saved cart. Cart changes sync automatically in the background on every add, update, or remove. Works with any theme — no theme edits, no manual selector setup. Built with Shopify's App Proxy and official APIs for reliable performance on every store.

• Saves logged-in customer carts to their account automatically
• Restores saved carts on any device a customer signs in from
• Choose merge or replace when a saved cart is restored
• Syncs in the background on every cart add, update, or remove
• Auto-detects your theme's cart icon, drawer, and cart page