Persistent Cart, answered.
Straight answers to what merchants ask before installing — how cross-device cart sync works on Shopify, what shoppers experience, and how Persistent Cart fits with the tools you already use.
Does Shopify sync carts across devices by default?
No. On a default Shopify store the cart is stored in a browser cookie that lasts about two weeks — not on the customer's account. So when a signed-in shopper switches from phone to laptop, the cart doesn't follow them; it isn't there on the second device. Shopify's own community confirms cross-device cart sync needs custom code or an app.
Will my customers see popups or get emails?
No. By default Persistent Cart merges carts silently in the background — no popup, no email, no opt-in, nothing for the shopper to do. There's an optional "keep or combine" prompt you can turn on if you'd rather let shoppers choose, but it's off by default.
Does it work for guests or only logged-in customers?
It works for logged-in (identified) customers. That's what makes cross-device sync possible — the cart can be tied to the account and restored wherever that customer signs in. Guests browsing without an account aren't tracked.
How do I install it? Do I need a developer?
No developer needed. You install it in one click from the Shopify App Store, then enable the app embed in your theme editor — no theme code to touch. It starts working immediately.
Will it slow down my store?
It runs lightweight in the background and is Built for Shopify, which means it meets Shopify's performance and quality standards. Most merchants never notice it running — which is exactly the point.
How is this different from my abandoned-cart email app?
Abandoned-cart email and SMS apps act after a cart is abandoned and only reach shoppers who opted in. Persistent Cart acts before — it keeps the cart from disappearing when a signed-in shopper switches devices, for everyone. They're complementary; many stores run both.
What data does Persistent Cart access?
Only what's needed to sync a cart for a signed-in customer: the cart's contents (items, quantities, notes) tied to that customer for your store. It doesn't track guests, send emails, or capture marketing contacts. Data requests are handled through Shopify's required flows.
Does it work for B2B and Shopify Plus stores?
Yes. It's used across Basic to Plus, and it's well suited to B2B, where buyers build large carts across sessions and devices. On shared workstations, each signed-in buyer's cart restores correctly without leaking to another account.
Is there a free plan and a trial?
Yes — a Free Starter plan lets you test every feature for up to 10 cart syncs, and any paid plan starts with a 30-day free trial. Every plan includes the full app; your price simply matches your Shopify subscription level.
Can I cancel anytime?
Yes. Billing runs through Shopify, so you can remove the app or cancel from your Shopify admin at any time.
Do Shopify's new customer accounts already solve this?
No. As of 2026 the cart is still stored in a browser cookie rather than on the account, so even with new customer accounts a signed-in cart doesn't follow a shopper across devices and browsers natively. Persistent Cart adds that layer.
Which languages and currencies does it support?
It works with multi-currency Shopify stores, and it syncs the cart regardless of language. The app is used by stores around the world — cross-device cart loss isn't specific to any one market.
How do I know it's worth it for my store?
Test it on your own store before paying: the Free Starter plan runs up to 10 real cart syncs, and any paid plan adds a 30-day trial. On Basic it's $4.99/month — recovering a single mid-sized cross-device order more than covers it. You can watch it work on your own store before a dollar is charged, so you're not guessing.
Stop losing signed-in carts across devices.
Add Persistent Cart in one click — free to start, nothing for your shoppers to do.