FOAM

What it does

A synth that models the acoustics of bubbles and foam rather than playing samples. Six bubble modes run from random champagne fizz through dense foam rafts and turbulence to melodic and harmonic modes that follow MIDI notes and 75-plus scales. Fluid materials (water, honey, mercury, molasses) and resonant spaces (glass jar, bathtub, cave, skull) shape the tone, with chaos, drift and scatter modulation on top.

In the demo

Jade works through every section in AUM with a held note, showing the bubbles-per-second counter, the rate, size and ring controls, then the liquid and resonance blends and the chaos LFO with parameter locks. She finishes by running it through reverb and delay effects.

Worth knowing

The MPE touch surface only exists in the standalone app, and the desktop version’s surge section is absent on iPad. Anyone wanting a conventional keyboard synth with presets will find it ships with none.