Google is an American multinational company.It developed softwares for android, Google translate is most popular app.Its free software easily available on stores(playstore, chrome, etc).Google translate app was installed between 100, 000, 000 - 500, 000, 000 in android devices.And the size of this app Varies with devices.It translate 103 languages by typing & 50+ languages are offline you just have to download & use when you are offline.
ADVANTAGE:-
1) Easy to use.
2) Useful to learn any other language.
3) Its translate text by capturing good image.
4) Some languages translate by voices.