Play store is a inbuilt feature/software in android operating system. This is a software to download android applications for users. All the applications of android world is available in this software with new updated version and with many types.
In market there is no any website to for android applications, so it helps us. It’s concept is to provide all applications to users easily. Features are very easy to use. Usefulness is in high amount as android phone without play store is like bile without break.