iOS is mobile operating system that is used in mobile device such as iPhone, iPad and iPod. iOS is developed by Apple Inc. in 2007. iPhone application only runs on iOS and lots of iPhone apps are available at Apple App Store such as game, facebook, amazon, online booking apps, video calling apps and many more.
Android is Linux based operating system that is used in mobile devices such as Smartphone, tablets. Android operating system is open source and android apps are coded in java programming language. There are lot android apps are available in PlayStore like game, audio video calling apps, picture storage and online sale & shopping apps and many more.