How to Uninstall Apps and Reset Your Device
You uninstall applications on the Simulator the same way you do on the iPad, except you use your mouse instead of your finger. Follow these steps:
On the Home screen, place the pointer over the icon of the app you want to uninstall and hold down the mouse button until all the app icons start to wiggle.
Click the app icon’s Remove button — the little x that appears in the upper-left corner of the icon — to make the app disappear.
Click the Home button — the one with a little square in it, centered below the screen — to stop the other app icons from wiggling and finish the uninstall.
On a separate note, you can always reposition an app’s icon on the Home screen by clicking and dragging it around with the mouse.
You can remove an application from the background the same way you’d do on the iPad, except that you use your mouse instead of your finger. Follow these steps:
Double-click the Home button to display the applications running in the background.
Place the pointer over the icon of the application you want to remove, and hold down the mouse button until the icon starts to wiggle.
Click the icon’s Remove button — the red circle with the x — that appears in the upper-left corner of the application’s icon.
Click the Home button to stop the icons from wiggling and then click once again to return to the Home screen.
To reset the Simulator to the original factory settings — which also removes all the apps you’ve installed — choose iOS Simulator→Reset Content and Settings, and then click Reset in the warning dialog that appears.