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8 App Development
Your Aim
to learn about:
What is an App? The Android and iOS
Categories of Mobile Apps Varieties of Apps
Downloading and Installing an App Developing an App
WHAT IS AN APP?
An app is a software program primarily developed for hand-held smart devices such as mobile and
tablet. It helps them perform their personal and professional tasks more effectively. The app is a
modern term derived from the word application. Generally, the word app is used to refer to the
applications on smart devices such as mobiles and tablets. Thousands of apps are available for
smart devices. Most of the apps are freely downloadable. However, some of the apps need to be
purchased from the app store.
The three most popular app stores are Google's Play Store,
Apple's App Store, and Microsoft Store. However, the Microsoft
Store is not in use for mobile devices. But you can download the
apps for your computer from the Microsoft Store.
The three main types of applications are as follows:
Desktop Applications: The application that is mainly developed for a computer or laptop is
called a desktop application. This type of application depends on the hardware and operating
system on which it runs. It is usually developed for a particular operating system. Some of the
examples of desktop applications are Paint, Notepad, and Word.
Mobile Applications: The software program that is developed for hand-held devices such
as smartphones and tablets is called a Mobile application (also known as a mobile app).
These apps are installed and run on the device itself. Some of the examples of mobile apps
are Snapchat, WhatsApp, and Facebook Messenger.
Web Applications: The application program that is stored on a remote server and
accessed over the Internet through a Web browser interface is called a Web application.
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