Apple mobile application is a software running on the iOS platform. According to the statistics Apple mobile application downloads from 2008 to June 2017 have reached a staggering 180 billion,Each year, Apple announces the number of iOS apps downloads. This year Apple watch series 3 introduction most likely will become the third driving force behind the iOS platform growth. The App Store is a digital distribution platform, developed and maintained by Apple Inc., for mobile apps on its iOS operating system. The store allows users to browse and download apps developed with Apple’s iOS software development kit. Since 2008 release, App Store has generated over 70$ billion in revenue for developers.

An android app is a software application running on the Android platform.Statistics has shown that Android mobile apps have become part and parcel of a daily life for hundreds of millions all over the globe. The key usage statistics indicate that the total number of Android app in the last quarter of 2017, setting a record with a whooping 19 billion downloads. According to the statistics such demand indicates a lead of a massive 145% over Apple’s App Store.  The major distribution channel for android mobile apps is an app marketplace. An app marketplace is a type of digital distribution platform for a smartphone, tablet and computer software. With an introduction of an app marketplace software distribution model, software developers got a new way to distribute applications they develop and profit on it. The android market features both free and priced apps. Android mobile applications are written in the Java programming language and use Java core libraries.