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Vocal Lab helps you train to sing on key. It listens while you sing and displays the pitch of your voice on a graph, in real time. All you have to do is watch the graph while you sing and try to stay near the lines. With a little practice you can greatly improve your intonation.

Vocal Lab can identify problem areas in your singing, and can also help improve your intonation on various instruments - Violin, Brass, Woodwinds, and more.


  • "Sound Back" feature. Vocal Lab automatically generates a reference tone as an auditory guide.
  • "Scroll" feature. You can now record the pitch graph more...

What's New

Version 2.5:
  • Added the bass clef.
  • Improved the image resolution.


Mac OS X 10.6.6 or later

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Vocal Lab User Discussion

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lemon-kun Member IconReview+256


I've just bought this app over the app store. It crashes every 30 - 80 seconds, so it is barely useable. Contacting the developer is impossible, both the Mac App Store links for the developer’s website, as well as the link for support are dead. Also the link here at MacUpdate is dead and a Google search doesn't bring anything. Seems to be non-working abandonware.

So if you like the app I recommend to use the demo with popping up nag-screen, because it's still more comfortable to click on a button every 60 seconds than having to restart the app all the time…

Reply1 reply
Version 2.5
Laidman & Katsura (Developer)

sorry for inconvenience. could you email me the crash log files so that I could look into the issue and fix it?

katsura at mac dot com

dennisb1 Member IconReview+2

I think a minute is plenty of time for this sort of thing. Any longer and it would pretty much be freeware.
The previous commentor is so annoying to think the developers should change the nag period to suit one cheapskate.

Reply0 replies
Version 2.2.2
Peter Black Member IconComment+38
Peter Black

The trial period of this software is 60 seconds! That is, the nag screen comes on every 60 seconds to NAG NAG NAG you to buy. This is enough for me to NOT want to buy. Come on Laidman & Katsura give us a realistic time - like an hour, a day, a week to try it out. I always pay for shareware I use, so I don't need to be nagged to death. And the people who don't pay, won't. Remember you attract more flies with honey than vinegar, so have a little trust my friend....

And besides 1 minute is not enough time to thoroughly test a product. Have you ever seen another piece of sw with such a short nag time?

I have written to the developers and there has been no response and no change to the nag time. So L & K - do you think this review will encourage people to buy?

Reply1 reply
Version 2.2.2
Laidman & Katsura (Developer)

sorry for the slow reply. you can simply dismiss the NAG dialog with a single-click and continue to evaluate. the trial period is not 60 seconds. the NAG interval is (or was).

anyways, we removed the NAG. you can now buy and download from Mac App Store.


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Current Version (2.x)


Downloads 15,189
Version Downloads 2,933
License Commercial
Date 23 Oct 2012
Platform OS X / Intel 32
Price $6.99