Using Appium - sample iOS app link and using Appium.app

The link is broken for the sample iOS app here:
http://appium.io/slate/en/tutorial/ios.html?ruby#prebuilt-ios-sample-app
Anyone know where to find it?

Also, I’m not clear how you use Appium.app which I downloaded for the Mac. I assume you load the sample script and then somehow start the test by clicking Launch. But I assume you need to install the sample app on the simulator somehow. How do you do this?