Mobile App apps or APP
A mobile software application or mobile app is a software application designed to run on a mobile device such as a smartphone or tablet computer.
Mobile apps often stand in contrast to desktop applications that run on desktop computers, and with web applications which run in mobile web browsers rather than directly on the mobile device.-Justplay
The term “app” is a shortening of the term “software application”.
It has become very popular, and in 2010 was listed as “Word of the Year” by the American Dialect Society. In 2009,
technology columnist David Pogue said that newer smartphones could be nicknamed “app phones” to
distinguish them from earlier less-sophisticated smartphones.
Most such devices are sold with several apps bundled as pre-installed software,
such as a web browser, email client, calendar, mapping program, and an app for buying music or other media or more apps.
Some pre-installed apps can be removed by an ordinary uninstall process, thus leaving more storage space for desired ones.
Where the software does not allow this, some devices can be rooted to eliminate the undesired apps.
Apps that are not preinstalled are usually available through distribution platforms called app stores.
They began appearing in 2008 and are typically operated by the owner of the mobile operating system, such as the Apple App Store, Google Play, Windows Phone Store, and BlackBerry App World.
However, there are independent app stores, such as Cydia, GetJar and F-Droid. Some apps are free, while others must be bought.
Usually, they are downloaded from the platform to a target device, but sometimes they can be downloaded to laptops or desktop computers. For apps with a price, generally a percentage, 20-30%, goes to the distribution provider (such as iTunes),
and the rest goes to the producer of the apps.
The same app can therefore cost a different price depending on the mobile platform.
Apps can also be installed manually, for example by running an Android application package on Android devices.
Developing apps for mobile devices requires considering the constraints and features of these devices.
Mobile devices run on battery and have less powerful processors than personal computers and also have more features such as location detection and cameras.
Developers also have to consider a wide array of screen sizes, hardware specifications and configurations because of intense competition in mobile software and changes within each of the platforms (although these issues can be overcome with mobile device detection).
Mobile application development requires use of specialized integrated development environments.
Mobile apps are first tested within the development environment using emulators and later subjected to field testing.
Emulators provide an inexpensive way to test applications on mobile phones to which developers may not have physical access.
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