We're a small company with a reputation for tackling big problems. We combine top-notch design with cutting-edge research to create world-class audio applications.

Along the way, we've received many accolades, including two Apple Design Awards for our products Capo and FuzzMeasure. Our software is recognized as some of the best in the industry, and we strive to maintain that reputation.

Want the latest news?

Sign up for our newsletter, or read our blog

Sign Up

For over 7 years, we've developed Mac software to serve all kinds of users in the audio industry. Whether you're learning to play an instrument, recording lectures in stats class, or building a world-class acoustic space: we've written software with you in mind.





Learn your music

Capo is a revolutionary tool that helps you learn the music in your iTunes library by slowing it down without affecting its pitch.




Simple, powerful signal analysis

FuzzMeasure has a very intuitive interface, and makes comparing multiple graphs as easy as pointing and shift-clicking measuremnts.




The tape recorder…fast forwarded to Mac OS X

TapeDeck is a powerful and fun audio recorder for your Mac. It's just like your old analog tape recorder, only better. Much better.

App Store Website



July '14

Chord Intelligence

We just shipped Capo touch and Capo 3.1 last week—on the same day!—and a large part of the time on this project was spent building Chord Intelligence. I feel that the name is fitting; Chord Intelligence is trained from a collection of music and applies its knowledge to what it hears in an audio recording. [...]


October '13

Capo 3

On Monday I launched Capo 3—the most significant launch in my company’s history. There are many reasons for its significance, but these three stand out: It broke my previous one-day sales record by 2x on launch day Capo got an Editor’s Choice feature on the Mac App Store on Thursday I had some help on [...]


March '13

FuzzMeasure 3.2.5

It’s been too long since I’ve spoken about FuzzMeasure. To the outside world, it might seem like I’ve not done a thing with the product in years! Fortunately for my users, that is certainly not the case. I have been working on a major update to FuzzMeasure for quite some time now. The work has [...]