Software applications installed on a device. Thus, devices are computers. Moreover, mobile computers are the most popular.
Apps generally refers to mobile applications. Mobile Operating Systems (OS) allow users to install on devices. Google’s Android OS and Apple’s Internet OS, iOS, are the most popular.
They are categorized by software type and function. Manufacturers develop them for devices. Also, third party developers. OS required to run.
Some are installed on devices for us. Others are free. Many must be purchased. Most, third party apps are available in app stores.
Last, app generally refers to mobile applications. However, includes all software. Therefore, a program that runs on a computer.
Mobile OS allows us to install programs on our devices. Google’s Android OS. In addition, Apple’s Internet OS, iOS, are the most popular.