Which software helps to make App

Answer 1

For android apps, Android studio is a famous one whereas for IOS apps you should use Xcode.

NOTE:-
these software are just tools, you still should be familiar with the language you are using to make apps

Answer 2

For website all you need is a text editor and knowledge of front end and back end programming.

But still if you are searching for tools then you can use stuff like WordPress to make the work easier.

Answer 3

And for make website?

Answer 4

Notepad editor/ Vs vode