What language is Secret written in?

Question

Programming languages

What programming language is worth learning in order to write an analogue of the secret application with great functionality. The essence of the change is that a group is recruited up to a certain number, one person invites, then the messages are also anonymous.
What programming language would you recommend to start with, and at what point I can understand that I am ready to learn the language for this application.
PS I have a great desire to learn languages, I grasp on the fly, I eat 6 hours a day and 2 months.
I apologize in advance, perhaps for the incorrectly posed question.

Answer 1

What can I say for sure that by the time you learn how to raise large and non-buggy services, you will not be up to Secret )) But the motivation is good!
For prototyping, you can do javascript, and look for helpers along the way.