About the Reason operating system versions Reason comes in two platform versions: one for Windows 10/11 (64-bit) and one for macOS 10.13 (High Sierra) (64-bit) or later. The screenshots in this manual were taken from both platform versions of Reason, and some screenshots remain from older versions of Reason. Since the program layout is more or less identical in these versions, there shouldn’t be any problem following the instructions.