From the mail:
"All Goodhertz plugins have been rewritten from the ground up for Windows and Mac support! Been waiting to use Vulf Compressor on your PC, or Wow Control as a VST in Cubase on your Mac? Well wait no longer because now’s the time to download! We’ve just added VST, VST3, and AAX support for Windows, as well as VST and VST3 support for Mac (in addition to our existing support for AU and AAX).
We’ve made a ton of improvements in v3, including support for custom presets in all formats, AAX metering, and support for Korean and Japanese in our user interfaces.
But the best news? This is a free upgrade! If you already own a Goodhertz plugin, simply download the upgrade, login, then you’re all set.
We hope you love version 3!"