Google as we know it the most popular or number one search engine. Google mobile app is one of the best app because google mobile app not only a search engine it includes NEWS. You can read Daily NEWS according your interest. It inculed many feactures like google voice one of the best feacture of the world. You can say anything in every language Google can search it.
Its desgine, layout is also very beautiful. Its opening and ending sound is also very cool. In everyone it can be open just in longpress on homebutton. It can give device information include Contacts, Music, Apps, Battery, Sensor reading and many more. In short it is the best app.