To suggest an alternate: The free SkalMac Tuner is a great, easier to use, intuative standard tuner.

This has far more non-standard tuning options, but for someone like me, who simply wants an easy way to tune their guitar I find it clunky and annoying.

But I'm not a high-end musician, and I don't generally need non-standard tuning. Based on some comments here. it's clearly a boon for the right person. But for many it will be overkill.

I'm a propfessional musician, and I have been using the previous version for a long time. It always worked fine, and I like it a lot better than some tuners that you actually have to pay for.
This version is even better, so the least I can do is to give my heart-felt THANK YOU, GUYS, to the developers.

I like it! It's simple to use and I've never had it crash. I'd like to see a setting for DADGAD, though.

I downloaded and installed a fresh copy and it now works fine. Of course, the tiny speaker on the computer can't really do justice to the lower two strings. My first copy of the program came from the Mac Addict disk and the second was downloaded from this site.

A simple but excellent application that exactly plays the notes that I, a tone-challenged person, need to duplicate in order to tune my guitar.