Free iOS Synthesizer, SynthMaster One

SynthMaster One – a Universal synth for iOS – is available for a limited time as a free download.

SynthMaster One is a powerful wavetable synth that offers 16-voice polyphony, deep wavetable synthesis capabilities, AUv3 support, effects, cloud patch synchronization and more.


  • ]Universal App: SynthMaster One is a universal standalone/AUv3 synth app running on iPhone 7 and above.
  • 650 Factory Presets: SynthMaster One iOS comes with presets from a world class team of sound designers: Arksun, Aiyn Zahev, BigTone Studios, Brian Transeau, Bluffmunkey, Bulent Biyikoglu, Gercek Dorman, Dejavu Sound, Fragment Audio, Kurt Ader, Mirko Ruta, Nori Ubukata, Rob Lee, Ufuk Kevser, Selcuk Ergen, The Machine, Vandalism Sound, Venus Theory, Vorpalsound and Xenos Soundworks
  • AUv3: SynthMaster One iOS supports AudioUnits V3, allowing multiple instances to run under supporting DAW apps like GarageBand, Cubasis or Beat Maker.
  • Files App Integration: Easily import/export presets, waveforms or scales using the common file browser UI (requires iOS 11+).
  • Real-time Modulation Feedback: See in real-time how modulation sources and targets change. This is a very helpful feature when designing sounds!
  • Cross Platform Cloud Synchronization: Easily synchronize your SynthMaster One related data across multiple platforms (Windows, MacOS, iPad, iPhone)
  • Semi-Modular Architecture: For each SynthMaster One instance, there are 2 oscillators with 2 sub oscillators, 2 Filters, 4 ADSR Envelopes, 3 LFOs, a powerful 16 step arpeggiator/sequencer and also 11 different effects that can be inserted on to 6 FX insert slots. The sub oscillators can be connected to the oscillators in 5 different modes which let you use it as a regular sub oscillator or do complex modulations such as ring modulation, amplitude modulation, phase modulation or frequency modulation.
  • 32 Step Arpeggiator/Sequencer: The arpeggiator in SynthMaster One features classic arpeggiator modes such as Up, Down, UpDown, DownUp, UpDown2, DownUp2, AsPlayed as well as Sequence, Chord and Arpeggiate modes.
  • Wavetable Synthesis: SynthMaster One implements true wavetable synthesis which opens up new possibilities for sound design. It comes with a rich content library with hundreds of waveforms and wavetables.
  • Stereo Oscillators with up to 16 voices Unison: Each of the 2 oscillators in SynthMaster One have stereo output, and can have up to 16 voices “unison”. Using the “voices”, “voices mix”, “detune curve”, “detune spread”, “pan stread”, “tone spread” and “phase spread” parameters, each oscillator can generate a rich “supersaw” type sound.
  • Zero Delay Feedback Filters: All of the 4 filter categories in SynthMaster One are developed using the zero delay feedback filter technology. With advanced filter parameters like input gain, drive, acid, filter nonlinearities and up to 4 times oversampling you can get that “analog” sound from the filters!
  • Rich Set of Effects: SynthMaster One features 11 different effect types: Distortion, LoFi, Ensemble, Phaser, 6 Band EQ, Compressor, Vocoder, Delay, Chorus, Tremolo, Reverb.
  • Microtuning: SynthMaster One supports Scala tuning, so tuning can be set either for each preset or globally by loading from a Scala tuning file. SynthMaster One comes with 300+ scales ranging from 5 note equal tempered scales to 12 note alternate tuning scales.
  • Preset Browser: SynthMaster One features a comprehensive preset browser with separate search criterias for instrument type, preset attributes, music style or preset author.

Pricing and Availability

SynthMaster One is available now as a free download.

12 thoughts on “Free iOS Synthesizer, SynthMaster One

  1. This is a fantastic sounding, incredibly powerful synth for iOS. It’s in my top 3 faves for pure synth sounds. The modulation rates seem very snappy and the structure is well-thought-out.

    I had some trouble with tuning maps and getting additional presets. But those problems may have been solved in recent updates.

    Get it.

    1. Tried again to get extra presets that are promised by registering with the desktop serial. No luck.

      It was about 1.5 years ago, developer kept sending different serials none of which matched the original. Confusing. Then he just stopped responding. Alas.

      I won’t mind paying $5 for the additional (promised) presets, but it would be cool if that would just get fixed already.

      1. Dear Stub,
        I have desktop serial number and I had the same problem. Try this. It worked for me.
        1. Make sure you have current iOS/iPadOS version
        2. Uninstall SynthMaster One from iOS Device
        3. Install it again
        4. Do not register
        5. Click sound menu from top / center area and choose “Download Bonus Presets”
        6. Now in a new tab register with your: name / e-mail / desktop serial number
        7. After confirm – all patches (around 1280) should download to your library in a few seconds
        Kind regards, Dakti

  2. Awesome Synth!! Been using it daily on a project of mine!!

    Recommend getting this Synth. You’ll be overjoyed with it!!

  3. No mention of MPE, which is unfortunate for wavetable synths as they offer so many interesting modulation possibilities.

    Otherwise sounds really amazing!

  4. Very glad I downloaded this. Fantastic modulation options. One frustration- Emmanuel claims that you can record Sequences with a midi controller. I have not been able to find the record button to make this work. Am I doing something wrong?

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