You can select the market region for SEO Lab Mac OS X version from the preferences panel. Currently the following regions are supported.

USA, Germany, France, Australia, Canada

This is not as extensive as the market region support in the Windows version. We will be adding support for more regions in an upcoming update that will be released in a few days.

Please note that the preferences panel has other options that will allow you to control the lookup speeds, auto-save interval, etc.