someone knows how to create an app that records phone calls, thanks

Question

I know it is not the place to ask this but I looked for several places and nothing for that I look here. I don't know how difficult it is to create the app, but I don't think it's complicated.

Answer 1

It's not possible in javascript

Answer 2

if you don't think its complicated than you can try it out yourself.

Answer 3

you know what kind of programming language I could do it with?

Answer 4

For example Java may help you