What is a pos app?

A pos app (short for "point of sale") is an application that allows brick-and-mortar and online businesses to process orders and accept payments from customers. These applications are usually connected to a business's point of sale (POS) system. But they can also be stand-alone applications. A business doesn't need a cash register to accept payments through a pos app. All it needs is a smartphone or a tablet that runs the app. Some pos apps can also work from a computer.