If the demo limitations are too restrictive, you can use these free alternatives that provide similar "pumping" or volume ducking effects:
: Automatically ducks the volume whenever a kick drum hits, even in complex patterns. Nicky Romero Kickstart VST Free Download
If you decide to upgrade from the demo, the latest version includes several professional features: If the demo limitations are too restrictive, you
: A "Kick View" overlays your kick drum's waveform so you can see exactly how the sidechain is reacting. Legitimate Free Alternatives Nicky Romero Kickstart VST Free Download
: You can drag the sidechain curve left or right to perfectly match the length of your kick.