when the app corrects your accent, what's the meaning of "correct"? UK received pronunciation? US Midwestern? Something else? For context I am an immigrant to

when the app corrects your accent, what's the meaning of "correct"? UK received pronunciation? US Midwestern? Something else? For context I am an immigrant to Australia and most pronunciation apps try to teach me some type of US accent, which is not useful to me. My dream is an app where you can select "I want to learn accent [X]" before starting