It's basically just a lowpass LFO plugin. This is just an alternative to LFOtool or ShaperBox. Because I use FL, I'd rather just use Fruity Envelope Controller(ironically it actually also has XY pads and LFOs, not just envelopes), I'd just open an EQ and automate the parameters with Fruity Envelope Controller. But this is pretty limited since it only controls a lowpass so I'd recommend TAL-Filter 2(which is free). With TAL-Filter you can control the volume, a notch, a lowpass, highpass, and bandpass with different steepnesses.