Please try Guitar Tuner.app on Mac OS X. It has a neat UI so I can see where the sound falls within on the scale. Took a screenshot for you: http://imgur.com/XC

Please try Guitar Tuner.app on Mac OS X. It has a neat UI so I can see where the sound falls within on the scale. Took a screenshot for you: http://imgur.com/XCge66b http://imgur.com/XCge66b Personally that UI is better for me.