This app will switch your locale settings automatically when you launch the app.
So, there is no need to switch the locale setting before you start the app of your choice.
For example, you may want to use in in the following cases:
* I want to use in other languages instead of using the application of a strange language. But I think it is troublesome to switch the locale.
* I usually want to use the my mobile phone in a foreign language, But I want to use my native language in particular application.
* Cannot switch to an unsupported language in the app you want to launch, or in your cell phone.