Create an App Launcher Mac os x

I was wondering how to create an app launcher that launches an app and terminates it self (the app launcher is the app that's going to b开发者_开发问答e terminated after it launched the other app).

So the app I want to launch is an app I've created earlier and it is added into the Xcode project.

And what I was thing was that it was going to be launched automatically when you open the app launcher.

Thank you in advance! :)