Apple has provided an orchestra of instruments for developers to use to fine tune their apps and create the best user experience possible. At compile time, within the simulator, on the device and in the field. Apple offers some solid advice to offer developers on how to make their apps the best they could possibly be. This session will look at the series of tools available from using static analyzers, to knowing when to use the simulator, and when using the device is required to collect the data necessary to understand just how an application is performing. It will also show how to gather information from testers that are testing the app live in out in real world scenarios rather then just in the team room.