Android is a open source software developed by Google in 2003, the most striking feature of this highly flexible Operating system is that it can be modified to suit the interest of handset makers. Android is highly customizable in nature, from the home screen to the themes or wall papers, everything can be customized. Android apps are the package units which are designed and developed using Android Software development kit, Android is an open source platform developed by Google, The application of Android is not limited to Smartphone it is also present in Android tablets, smart watch, android TVs etc. Android application development have allowed the business companies and developer to explore the pool of opportunities that is available with Android application development, the rapid application development related to Android have contributed a lot to it growing popularity among the users.