Application doesn't work on Mac OS X 10.9.2.Unfortunately, this product was removed from Apple Store and its official website is for sale. This means that the application was discontinued by the developer. This product is developed to run on Mac OS 10.4 or later. However, the developer stated that it might encounter errors with some Mac models. In this case, there is nothing you can do because there is no way to contact the developer to obtain a fix or an update.
Psst is a simple but beautiful faceless application that
lets you adjust/mute the volume of your Mac's startup chime.
It runs in the background and uses no CPU
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