Cube Spheres are spheres created by subdividing a cube and applying a cast modifier set to sphere, this creates a perfect sphere thats composed only of quads, unfortunatly, Cube Spheres aren't available in Edit mode due to needing both subdivision and cast modifiers, and using them in Edit mode places them on the parent mesh not the newly created cube, though they can be joined to any mesh after creation if required.

Simply Smooth has been tested with 2.83 & 2.93 LTS releases aswell as the latest stable version 3.2, I will be supporting all new stable versions of Blender and LTS releases go forward.