Do I need to install Genymotion?

Last verified against genymotion.com:

Yes. You must install Genymotion Desktop on your computer to run Android virtual devices — download it from the official page and follow the installer steps Get Started with Genymotion Desktop.

On Windows the installer also sets up VirtualBox, while macOS and Linux use the built‑in QEMU hypervisor, so no extra software is required Get Started with Genymotion Desktop.

You can get the installer here: Genymotion Desktop download.