Introduction

An Office App is a third-party software component that adds functionality or extends features in an Office document. For example, you can add an app called Radial Bar Chart to provide additional options for charting in Excel. You can quickly install, insert, and manage apps from the Office Store at Office.com directly from an Office program.

An add-in extends the functionality of Excel and other Microsoft Office programs. Excel includes a variety of add-ins—programs that are included with Excel but not essential to its functionality. Some of these supplemental programs—including Analysis ToolPak, Analysis ToolPak VBA, Euro Currency, and Solver—are useful to almost anyone using Excel. Before you can use an Excel or a third-party add-in, ...

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