Youtube is the best app flin android .It is so usefull for all people . It helps us so much and show all the the things we need .Itbis the best souce to study or understand the important things of our life . It is too good and very good app .people upload thier videos about many usefull things and provide others information about it . It is tooo good dddddddddddddddddddddd . It is thr best and ctetive method to earn money . We can watch hd movie trailers movies and things No other apps can tke its place it is alwoya on no 1 and alwaya on no 1. I will give 5 star to it thankyou to all youtube legend app