Cart Relay ‑ Persistent Cart

Cart Relay ‑ Persistent Cart

Pricing
Free
Rating
5.0 (4)

A signed-in customer's cart is saved to their account and restored when they sign in elsewhere.

Shoppers browse on a phone and buy on a laptop. Cart Relay saves a signed-in customer's cart against their customer account and puts it back when they sign in on another device. No link to click, no code to enter. If the second device already has a cart, the two are combined: quantities of shared items add up and no line is dropped. Signing out clears that browser's cart and keeps the saved copy, so a shared computer stays private. Setup is one app embed in your theme — nothing to configure.

Shoppers browse on a phone and buy on a laptop. Cart Relay saves a signed-in customer's cart against their customer account and puts it back when they sign in on another device. No link to click, no code to enter. If the second device already has a cart, the two are combined: quantities of shared items add up and no line is dropped. Signing out clears that browser's cart and keeps the saved copy, so a shared computer stays private. Setup is one app embed in your theme — nothing to configure. more
  • Unlimited cart syncs between phones, laptops and browsers
  • Setup is one theme app embed — no code, and nothing to configure
  • Two carts merge automatically: quantities add up, no line is dropped
  • Sign-out clears the cart from that browser and restores it at next sign-in
  • See cart syncs, orders from synced carts and their order value

Languages

English

Works with

  • Shopify Admin

Categories

Cart recovery

Reviews (4)

Overall rating
5
Counts per rating level
  • 100% of ratings are 5 stars
  • 0% of ratings are 4 stars
  • 0% of ratings are 3 stars
  • 0% of ratings are 2 stars
  • 0% of ratings are 1 stars
September 21, 2026

Really useful app! Cart Relay makes it easy for customers to keep their cart when switching between devices. I tested it across different devices and the cart sync worked smoothly and reliably.

Setup was quick and straightforward, with no complicated configuration needed. It’s a simple feature, but it can make the shopping experience much better for customers who browse on one device and complete their purchase on another.

Definitely a useful addition to a Shopify store. Highly recommended!

shri prabhudham
India
7 days using the app
September 21, 2026

Been using Cart Relay and it works really well. Super easy to set up and does exactly what it’s supposed to do. Cart syncing between devices is smooth and I haven’t had any issues so far. Simple, useful app that just works. Definitely recommend it!

Skyline Appliances
India
7 days using the app
August 31, 2026

Cart Relay appears to be very promising; my users are enjoying the cart sync feature, it has helped me boost my conversion rate. Let's see further!

ABBA-Textiles
United States
3 days using the app

Support

App support provided by Flywheel Systems.

Developer

Flywheel Systems

Sheridan, WY, US

Launched

August 27, 2026

Data access

This app needs access to the following data to work on your store. Learn why in the developer's privacy policy .

View customer data:

Device and activity data

  • Device and activity data

    Geolocation, IP address, browser and operating system

View staff and contributor data:

Store owner

  • Store owner

    Name, email address, phone number, physical address

View and edit store data:

Products, orders, Online Store

  • View products

    Product listings, collections

  • View orders

    All order history for the last 60 days

  • Edit Online Store

    Theme, checkout page

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