Free Synths For iOS

Spectrum Synthesizer Bundle offers AU versions of some Mutable Instruments designs      05/07/19

Free Synths For iOS

Burns Audio tells us that Spectrum Synthesizer Bundle is a collection of Audio Unit ports of popular eurorack synthesizer modules. Spectrum contains DSP code provided under the MIT open source license by Mutable Instruments.

Included are:

  • Spectrum - Multi-mode 8-voice polyphonic oscillator featuring 14 high quality oscillator algorithms
  • Modal - Modal synthesis. Bowed, Blowed, and Struck sounds through a 64-band resonator. Also included as an effect.
  • Resonator - 7 beautiful string generation algorithms. Also included as an effect
  • Granular - Granular sampler, looper, pitch shifter, reverb effect.


Each audiounit also features:

  • modulation LFO
  • modulation ADSR envelope
  • XY touchpad (except on Modal)
  • 2-source modulation matrix allowing for complex and evolving patches.
  • MIDI CC control of parameters
  • Loadable as an AudioUnit effect (except Spectrum)

Pricing and Availability:
Free at the app store.

More information:







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