Square Online for WooCommerce POS

Most people meet Square through its iconic white card-reader. What is less visible is that Square also has a full online payment product that any WooCommerce site can use via the Square for WooCommerce plugin. That plugin is what Oliver POS rides on top of: at the register, Oliver opens Square's hosted checkout inside the in-POS browser view, the customer pays, and the order syncs back to WooCommerce.

It's slightly weird because Square has its own POS, and we're explicitly not using it. The reason a retailer might still want Square at the Oliver POS is that Square's rates are competitive and a merchant might already have a Square account from a previous setup. Rather than migrate the merchant account, Oliver can simply use Square's online checkout as the payment surface at the counter — leaving Square processing the money while Oliver runs the store, the inventory, the WooCommerce sync, and the staff workflow.

Square owns Cash App, and Cash App Pay is available as a method through the Square WooCommerce plugin. In the US, that means Oliver POS surfaces Cash App Pay at the counter whenever a Square merchant has it enabled — useful for younger shoppers who pay friends in Cash App and prefer it over typing card details.

Pick Square at the Oliver POS if you have a legacy Square account you don't want to close, if you need Cash App Pay specifically, or if you're in a market where Square's online rates beat the local alternatives. If you're starting from scratch with no processor preference, Stripe Checkout is usually a smoother fit for a WooCommerce-first stack.