What type of language do we use in building apps?

Question

I have been wondering on how to create an app...I can build a site with html, css, and some js ..but do not know the language to us to start an app, any help?
https://code.sololearn.com/WvEIGReRjAZh/?ref=app

Answer 1

https://www.sololearn.com/discuss/1785849/?ref=app

Answer 2

I think you use Python, Javascript, C++. any orograming language.
I think you could also use HTML.

Answer 3

For android
Java is the femouse
Python is another choice

Answer 4

I actually helped build an app using python. You need kivi to use python.