My game app works on all iPhone's and all iPad's. I also want it to work on all iPod Touches. There is no iPod Touch simulator in Xcode 6.1. So how do I work on it?
You have to keep in mind, that the iPhone simulator is just a simulator. It is not the real device.
The reason why there is no iPod Touch simulator is, because there would be no difference between the iPhone 5 and the current iPod Touch, since both have the same screen size and both have a 32 Bit architecture. They may have different hardware, but that doesn't matter
You can however, if you want to, make a new simulator based on the iPhone 5 simulator, which is named iPod Touch. This can be done in Xcode > Window > Devices. There you have to click on the little plus-button in the bottom left corner. Choose the device type, set a name and you are good to go.
For older iPod Touches choose the iPhone 4s simulator, since they had the screen size of the iPhone 4s.
来源：https://stackoverflow.com/questions/29289788/how-to-get-ipod-touch-simulator-in-xcode-6-1