Android and iOS have been rivals for many years with aryl still competing with each other. These days there are more Imrie than a billion smartphone users who use Android or iOS phones. Android claims about 82.8% of the market share while iOS chiming 13.9% of the market share in 2015. The key comparator features between Android and IOS will be rated as Security, Application Market Analysis, Hardware Requirements, Platform Application Development Frameworks, etc. With a research paper, to provide conversion in between Android and DS app IOS, Convers app market, Security.