Download

MCAT is currently available for macOS only, on Apple Silicon Macs (M1 or later). Intel Macs are not supported.

Unzip the download and move MCAT.app into your Applications folder.
Open it. macOS will refuse and warn you the app is from an unidentified developer — this is expected. MCAT is research software distributed outside the App Store, so it isn’t signed by Apple.
Open System Settings → Privacy & Security and scroll to the Security section at the bottom. You’ll see a note that MCAT was blocked; click Open Anyway and enter your password.

Linux and Windows support is coming. In the meantime, you can build from source by following the build section on GitHub.