gfxCardStatus is an unobtrusive menu bar app for OS X that allows MacBook Pro users to see which apps are affecting their battery life by using the more power-hungry graphics.

Features:

• Simple, clean user interface: gfxCardStatus is super simple. Unobtrusive i and d icons denote whether your MacBook Pro is using its integrated or discrete GPU.

• Real-time notifications: gfxCardStatus notifies you via Growl when your active GPU changes, so you're always in the know.

• Manually switch GPUs: Want to save some battery life and decrease heat? Switch over to your integrated GPU. Need more power? Switch to the discrete GPU.

• See what's causing your discrete GPU to kick on: Just pop open the gfxCardStatus menu and take a glance at the "Dependencies" list.

Requirements:
OS X 10.7+
2008-2012, 15-17" dual-GPU MacBook Pro

Intel Required