Sync & Integrations

Everything we've written on sync & integrations.

Square POS and Shopify product cards showing mismatched SKUs SHOE-01 and shoe-01

Square and Shopify SKUs Not Matching? Here's How to Fix It

When products refuse to sync between Square and Shopify, the SKUs are nearly always the reason. Here's how to find the mismatch and fix it for good.

Square POS and Shopify POS shown side by side with real-time inventory sync between them

Sync & Integrations

Square POS vs Shopify POS: Which Should You Run In Store?

Square POS or Shopify POS for your counter? Here's an honest comparison — and why plenty of retailers are better off running both and keeping them in sync.

Shop owner ringing up a customer's helmet on a Square point-of-sale in a bike store

Sync & Integrations

How to Stop Overselling When You Sell on Square and Online

Selling the last item twice — once in store, once online — isn't bad luck. It's a system gap. Here's why overselling happens and how to shut it down.

A laptop in a clothing store showing a Square to Shopify sync dashboard beside a sync app checklist

Sync & Integrations

How to Choose a Square–Shopify Sync App (2026 Buyer's Guide)

Most Square–Shopify sync tools look the same on the surface. Here are the seven questions that reveal which one will actually keep your inventory honest.

Diagram showing real-time two-way inventory sync between Square POS and a Shopify online store

Sync & Integrations

How to Connect Square to Shopify (2026 Guide)

Square and Shopify don't talk to each other out of the box. Here's how to connect them the right way so a sale in your store updates your website instantly, and you never sell something twice.

Diagram showing real-time two-way inventory sync between Square POS and a BigCommerce online store

Sync & Integrations

How to Connect Square to BigCommerce (2026 Guide)

Square and BigCommerce don't talk to each other out of the box. Here's how to connect them the right way so a sale in your store updates your website instantly, and you never sell something twice.