Instruments for Performance and Behavior Analysis

A world-class OS X or iOS application provides a great user experience, and that means more than beautiful images and intuitive design. Great applications must feel fast, respond quickly, and impress with smooth animations. To help make your app great, the Xcode toolset includes Instruments, a truly unique application that helps you track down performance bottlenecks in your OS X and iOS apps.

Instruments collects data such as disk, memory, energy, or CPU usage in real time, either on your Mac or from a connected iPhone. The collected data is graphically displayed as tracks over time, making it easy to pinpoint problem areas, then drill down to the offending lines of code. Instruments helps guarantee your gorgeous user interface will be accompanied by equally impressive responsiveness.