Why isn't anyone making a REAL guitar tuner for OS X where you use your computer's mic or line-in and the app shows you in real time where your tuning is at?

This would allow you to tune while others are trying to tune around you in the same space and would be very helpful with non-standard tunings when you are trying to visually see where you are at between ranges.

Here is what I'm talking about, but it only runs in OS 9 (not classic).

GUITAR TUNER Version 4.0
http://members.aol.com/raymeow/index.html#gt.targ

God, this thing was so tight and really was FAR more accurate and massively more responsive than hardware tuners I've used. Someone make this for OS X... dammit or the goat gets it at midnight, ya hear?

If I wanted a tuner that just plays notes, I would just program one myself in Shockwave. Somebody please make a real guitar tuner for OS X before I have to waste time and make one myself, dammit. I will pay good money for this thing, as would others. I hate to say this, but there are tons of these for Windows... non having ANY apps like these on OS X really shows why some people stick with OS 9 and even... Windows. Make this line-in/mic tuner b/c of Apple pride! Dammit...