Curtis uses an unusual hybrid of wavetable and granular synthesis to create tones and timbres quite apart from the standard FM or subtractive synthesis fare. Add this app to your arsenal to create sounds you simply cannot squeeze out of any other synth, no matter how much you’ve twiddled its knobs.

Create a synthesizer from any recording, with endless temporal possibilities. Play the sound forward, backward, or even at a single point! Unlike scratching a record, pitch doesn’t depend on how quickly you move through the recording. Of course Curtis brings a scratch mode too!

A physics-based fluid simulation drives an additive synthesizer, controlling a fat stack of up to 24 oscillators. The multitouch interface lets you control the fluid with your fingers, exciting the oscillators like strings on a liquid harp.

Various settings alter the fluid’s behavior as well as the resulting sound. Coax the fluid into a gentle motion, or crank the parameters for instant sonic madness.

Space is like an oscilloscope in reverse. Instead of merely viewing sound waves, Space lets you explore a huge range of timbres by sculpting the waves with touch. Add together two such oscillators, a unique Kuzmoscillator™ modulator, arpeggio, echo, and aliasing to create a truly broad palette of tones.

We're all only too familiar with the loop, the building block of so much modern music. Donut takes things further with a loop of loops, a 3-D torus of sound! Inspired by some ancient dictation hardware, Donut lets you play with a stack of loops as though it was a 2-D surface, transforming linear audio into an auditory plane, accessible sequentially but along any 2-D vector.

Donut can record and play with multiple heads, recording or playing multiple positions at once. You can spread the heads vertically to access different portions of the Donut, or you can spread them horizontally to create an echo effect.