2026
07/03
Elastic OSC Synthesizer

Elastic OSC is a synthesizer app based on the DSP code of the Mutable Instruments Plaits hardware oscillator module, one of the most beloved (and cloned) oscillator modules in the Eurorack modular scene.

Like the original, Elastic OSC comes with a wide variety of possible sounds, from analog-style, FM, and additive sounds to physical modeling, percussive, and even drum sounds.

Elastic OSC can be used in both monophonic and 8-voice polyphonic modes. You can play the app using the on-screen keyboard or an external keyboard or sequencer inside your DAW of choice.

The app focuses on ease of use, featuring two XY pads for intuitive sound manipulation of the oscillator engine and the effects. Despite the simplicity of the clean interface, the sound possibilities are vast, thanks to 24 different oscillator models and the ability to automate parameter changes, as is possible in all Elastic apps released so far.

A versatile arpeggiator makes it easy to start with simple ideas or create entire sonic worlds.

Elastic OSC includes an integrated help system (tap “?”) that provides explanations for nearly every GUI element, the underlying DSP model, and most of the app’s functionality.

What’s new in version 2.1:

  • Completely redesigned Preset Browser
  • 34 new presets by Andrea Cichecki
  • New Portamento modes (Legato & Always)
  • New Mod Wheel assignment options
  • Smoother preset switching

Features:

Synthesizer

  • 24 different sound engines based on MI Plaits DSP code
  • 4 main parameters per synth engine:
    • Frequency
    • Harmonics
    • Morph
    • Harmo
  • Recordable modulation/automation for almost all parameters with lengths of 1, 2, or 4 beats
  • ADSR envelope for amplifier
  • LPG envelope for modulation of timbre, FM, and harmonics
  • Adjustable velocity response affecting volume and/or LPG modulation
  • DX7 bank import
  • Wavetable import

Arpeggiator

  • Multiple arpeggiator modes
  • Various rates
  • Octave ranges
  • Skip Notes functionality

Master Effects

  • Five effects:
    • Overdrive/Distortion (5 types)
    • Hi/Low Filter
    • Chorus/Flanger
    • Delay
    • Reverb
  • Automation for all effect parameters
  • Master Gain
  • Switchable Limiter

Synth Engines

  • Virtual Analog
  • Waveshaping
  • 2-Operator FM
  • Granular Formant
  • Additive
  • Wavetable
  • Chords
  • Speech
  • Granular Cloud
  • Filtered Noise
  • Particle Noise
  • String Model
  • Modal Resonator
  • Bass Drum
  • Snare Drum
  • Hi-Hat
  • Virtual Analog VCF
  • Phase Distortion
  • 6-Operator FM 1
  • 6-Operator FM 2
  • 6-Operator FM 3
  • Wave Terrain
  • String Machine
  • Chiptune

LFOs

LFO 1 is included. Three additional LFOs can be unlocked via in-app purchase.

LFO Modulation Targets

  • Frequency Amount
  • Timbre Amount
  • Morph Amount
  • Harmonics Amount
  • Filter Amount
  • Pan Amount

LFO Mix

The Mix view lets you blend multiple LFOs and define how strongly each active LFO influences a target parameter. The closer a target is placed to an LFO corner, the stronger its influence. All active LFOs always sum to 100% (for example: LFO1 50%, LFO2 30%, LFO3 20%).

If you’re using this for marketing, ASO, or rewriting the App Store listing, I can also extract it into clean Markdown, plain text, or a structured document.

Elastic OSC is available from the AppStore HERE

For desktop version visit https://mominstruments.com/elasticosc/

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  • iPad Loops is an iOS music production blog dedicated to exposing the best iPad apps musicians, producers, and Djs. This is not a database of every app. It is, however, one of useful recommendations from someone with many years in music production. I try to update it on a daily basis (ok sometimes every two days) and I do my best to post useful apps only. My name is Jason Donnelly (Dj Puzzle). Some of the apps that contain my sounds are Synth One, EG Segments, Hammerhead, Retronyms AudioCopy, Audio Evolution Mobile, and iMPC Pro. My work is published by Roland, Antares, Magix, Soundtrack Loops, Sample Logic, Acoustica, Native Instruments, The Grammt Museum and many more. Subscribe to our RSS feed below to get updated when new apps are posted.
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