Currently beta-testing the new Chisel SDF add-on for Blender.
I like it. It blends (pun intended) into Blender’s UI / UX very well, comes with a very convenient quick menu, and features a custom ray-marching renderer, among other nice features.
Meshing of the SDF model is also very neat, using the Dual Contouring algorithm. And it works fine in Blender for MacOS. 
You can already buy it, but keep in mind that not every primitive / option that’s visible in this screenshot is available yet in the current release.