The HP Smart App is a tool for controlling and viewing your HP printers by installing the HP Smart App on your smart devices such as desktops, laptops, smart phones for both Android and Apple iOS, as well as desktops and laptops (Windows and Mac OSX). is software. (formerly known as HP All-in-One) is a software that allows you to setup your HP printer using your smartphone or various devices and scan, print, ratio documents and photos in an eco-friendly manner. Builds to manage.