The app helps you adjust settings for your TV and speakers and includes custom designed tests from THX.
If you're the kind of person that's always tweaking their settings, THX tune-up might be of some interest. It's an app designed to get your home theater looking and sounding good, and employs a few specifically designed tests in order to do so.
THX tune-up walks you through six different picture adjustments and two different audio adjustments, all of which were set up specifically for the app by THX. The app is free and looks pretty useful, but those without a way to connect their Apple device to their TV will be out of luck. Early reviews also say that the audio is not working through AirPlay.
If you have Apple TV though, or another way to connect your iPhone, iPad or iPod to your television, THX tune-up may be just what you needed.
Source: Big Picture Big Sound