The 2.1.0 version of KLANGapp for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The application lies within Audio & Video Tools, more precisely Music Production. This free software for Mac OS X is an intellectual property of KLANG:technologies GmbH. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
KLANG:app is an app that helps you to control your KLANG:fabrik. This app provides each musician with his own unique and individual sound mix. Place each instrument spatially via drag’n’drop anywhere around your head. Choose between conventional stereo, 3D or i3D.
You may want to check out more Mac applications, such as Speak, SH-201 Librarian or MacPOD, which might be similar to KLANGapp.