You can use code as is, or you can use Instruments to make it run faster and cleaner. Instruments is a tool in Xcode for improving iOS app performance and stability. Here Ron Buencamino provides a quick rundown of the process of isolating and analyzing memory, CPU, and network performance problems with Instruments. He uses the tools to fine-tune an existing app, and then shows how to make testing more efficient with UI automation. Use these techniques to make Instruments part of your software development cycle today.