1 Concept - the concept of the saavn app is very handy and usefull that uhh can easily surfed your songs which uhh want to listen and download also, even the app also give you the option of download . 2 layout and design -the layout and design of saavn app is also awsome and you can easily understand by seeing the app. functions: the fuction of the application is very quick as you can easily listen song online by 2G data pack also, and also can find song quite easily. usefullness: the saavn is very usefull as you can first listen the song in the app and if you like the song then you can download the song very fast and easily.