We chat is the application which is so popular but nobody use this application nowdays.
The processing of this application is slow and there is awesome option for chat but this is sociel application.
U first register and you can sign in and sign out of this application.
This option is not so good.
And the other feature is this you can talk with randomly come peoples in this application by waving your phone.
All the peoples is met you they belong from other country.
The best feature in this is the people you may find option, where you can find the people around you within 10 km circle.