Pricing varies by plan
Creators cited with this
Creators who use this also use

Ableton Wavetable
also used by 1 of them
Albion One
also used by 1 of them
Analog Lab 4
also used by 1 of them

AudioFuse Control Center
also used by 1 of them
Black Hole (audio routing app)
also used by 1 of them

Decent Sampler
also used by 1 of them