bitflipper
"Leading" suggests there are competitors, but I don't know of any. At least, not any with that business model.
I figure other mastering tool providers must be aware the casual user just flips through their presets.
So if this cloud-only solution gains in popularity, iZotope, IK Multimedia et al are going to have to review their product line and tack on some sort of AI software analysis.
TC-Helicon have for the longest time had their "Personal Sound Engineer" concept which supposedly analyzes your singing and optimizes your mic signal automatically.