Unity Live is a new software sound module for iOS, designed for live performance with an external MIDI controller.
The app lets you create create set lists, using the hundreds of Unity sound banks in splits and layers. Each sound may be edited via knobs for transpose, coarse, fine, volume, and pan, as well as per-algorithm specific sound controllers, routing amounts, and modulator parameters. Up to ten sound controllers per-algorithm can be controlled, for example, oscillator frequencies, volumes, and pans, as well as filter cutoffs, and resonances.
Audiobus & iOS 7 Inter-App Audio are both supported.
Unity Live is available for US $2.99. Additional sounds are available as in-app purchases.