When you download our products you will be sent both a Windows and Mac installer with an AU, VST3 and samples.  ​The minimum operating system requirements are: Mac OS 10.12 Windows Vista ​Some users are experiencing issues with Macs with the latest M1 chip however many users are not. We are currently working on an update to resolve M1 issues. If you are experiencing issues with your plugin and provide us with evidence we are happy to issue a full refund if we cannot provide you with an operational update within 14 days of purchase.