Android is an operating system for mobile phones, which was built on the kernel of Linux operating system and maintained by a consortium of hardware, software and telecommunications companies under the name of Open Handset Alliance. Mobile application development for Android OS is performed in Java programming language, although it doesn’t fully meet the standards
In 2007, Apple released first iPhone and started a big revolution in the market of mobile devices. The Apple Company also created iOS, its own operating system for their mobile devices (iPhone, iPad, and iPod). Mobile applications for iOS platform can be downloaded from on-line marketplace AppStore, which currently contains more than a million mobile