Hello I am naresh desai.
I will tell you about whatsapp.
I think whatsapp is best communication app without any doubt.
It provide the best communication facilities that everyone knows.
Facilities provided by Whatsapp.
Chats
Voice calls
Video calls
Group chats
Photo sharing via story
Etc.
It has the best server around the world .
It quickly sends message to the other users .it has the best design and layouts and best performance too.