What is Angular in simple terms?

Question

Angular

Hello!
I work mainly with php, mysql, js (jquery).
I started reading something about Angular and did not understand why I need it.
Do I understand correctly that angular is like a framework that works with html and js. And everything that will be displayed on the site is rendering from the side of angular. And php in this case will remain just an API. how it would be if an application was made on android. Android is like angular, but php is a back-end that returns JSON?

Answer 1

a framework that builds an interface on the client

Answer 2

I started reading about Angular and still didn’t understand why I need it

so don't
forget about Angular

Answer 3

Yes, imagine an angular application as an application running on the user's machine, as a desktop or mobile application. Only it spins in the ecosystem of browsers, not operating systems.