# SynthMaster One for iPhone — Powerful wavetable synth

> Powerful wavetable synthesizer app for iPhone with extensive sound design capabilities. (iPhone/iPad app by KV331 Audio.)

- Source: https://appshunter.io/ios/app/synthmaster-one-for-iphone/id1490902617 (this page in markdown: same URL + `.md`)
- Developer: [KV331 Audio](https://appshunter.io/developer/944155925)
- Category: Music, Productivity
- Price: Free with in-app purchases
- Rating: 4.80/5 from 329 App Store ratings · 45 written reviews indexed
- Age rating: 4+
- Requires: iOS 10.0 · 297 MB
- Languages: American English
- Released: 2020-01-09
- Data updated: 2026-08-21
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/synthmaster-one-for-iphone/id1490902617/reviews.md

## What is SynthMaster One for iPhone?

SynthMaster One for iPhone is KV331 Audio's first full blown synth app for iPhone. It's a powerful wavetable synth with an intuitive workflow. With its simple layout, rich wavetable/waveform content and inspiring factory presets library, designing new sounds with SynthMaster One for iPhone is a joy.

SynthMaster One for iPhone is feature wise identical to the desktop version except the following:

* 8 voice polyphony (32 for the desktop version)
* Comes with 300 presets (1250 for the desktop version)

FEATURES

* 300 Factory Presets: SynthMaster One iOS comes with inspiring factory 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.

SUPPORTS

* All 64-bit iPad devices
* AUv3 Audio Unit Extensions
* Note-per-channel MIDI controllers (MPE)
* Ableton Link
* Interapp Audio and AudioBus
* Bluetooth LE MIDI Controllers
* AirDrop

## Key features

- Wavetable synthesis
- 300 factory presets
- AUv3 support
- Files App integration
- Real-time modulation feedback
- Semi-modular architecture
- 32-step arpeggiator/sequencer

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Desktop Presets Upgrade | $9.99 | one-time |
| BigTone Club Construction Set | $4.99 | one-time |
| True Trance Sounds Volume 1 | $4.99 | one-time |
| Vandalism Future House | $4.99 | one-time |
| NatLife Retrowave Sounds Vol.1 | $4.99 | one-time |
| Demis Hellen Euphoric Trance | $4.99 | one-time |
| NatLife Progressive&Deep Vol.1 | $4.99 | one-time |
| Vandalism Shocking Future Bass | $4.99 | one-time |
| Venus Theory Trap Sounds | $4.99 | one-time |
| SM One Expansions Bundle | $24.99 | one-time |


## What do users think of SynthMaster One for iPhone?

Overall sentiment: mixed

**Pros**

- ✨ Excellent sound quality
- 🤩 Incredible features for free
- 👍 Easy to use interface
- 🎛️ Versatile sound design capabilities
- 🎵 Great for GarageBand integration
- 🎹 Impressive arpeggiator/sequencer
- 💡 Powerful synth engine
- 🚀 Fast performance (when working)
- 📱 Well-designed UI on iPhone

**Cons**

- 🐛 Frequent crashes
- 🔌 Issues with GarageBand integration
- 💸 In-app purchase problems
- 🔄 Presets not saving
- 📉 App appears abandoned
- ⚠️ Unusable due to bugs
- 🎛️ GUI cut off on some devices
- 🔊 Notes are off-key

**Commonly reported bugs**

- App crashes when loading saved presets
- App crashes when setting default sound
- AUv3 option disappears in GarageBand
- Inability to reload user patches without crashing
- Inability to purchase certain IAP packs
- Cells don't save, revert to first synth
- App doesn't function or open in GarageBand
- Every note is 1 note or lower
- GUI is cut off on iPhone SE
- IAA not loading in FL mobile

**Most requested features**

- Fix in-app purchase issues
- Improve GarageBand AUv3 stability
- Enable saving of custom presets
- Address crashing when loading presets
- Fix note pitch issues
- Ensure app is not abandonware
- Improve UI scaling on smaller screens
- Fix wavetable scrolling issues
- Make IAA work properly
- Allow recording of music

## Recent user reviews (10 of 45)

All indexed reviews: https://appshunter.io/ios/app/synthmaster-one-for-iphone/id1490902617/reviews.md

### 2/5 — Problème

*2026-06-29*

Je n’entends plus les sons sur mon iPhone 11 alors que les notes et vu metres se déclenchent bien et j’ai bien du son sur mes autres synthé.

### 1/5 — Plays no sound

*2026-06-19*

Plays no sound when  I open it and use it

### 5/5 — Consumers are dumb

*2025-11-11*

Just here to balance the rating because I hate unfair 1-star reviews

### 4/5 — SynthMaster one for iPhone

*2025-02-04*

I would give it 5 but I can’t buy in app purchases… I so wanted demis hellen presets

### 1/5 — straight up doesn’t work

*2025-01-09*

the app itself works but whenever i try to use it in GarageBand it straight up doesn’t function at all nor does it open. please fix this

### 5/5 — SUNTHESIS HEAVEN!!

*2024-12-10*

Used a little on a few tracks. The synth arpeggio sounds I’ve designed sound excellent, using LFO’s, filters, cut-off etc sound quality. For a free app im happy. It adds more sounds, alternatives, dimension to an already extensive sound library I have but the sounds I’m using sound a lot better than many synths I’ve used,
Using on my iPhone furniture now so the trick is to probably use it sparingly on a song, maximum 2 tracks for me otherwise many synths I’ve apps end up crashing especially if their are lots controller changes in a song. Which usually my synth tracks are working overtime constantly changing loads of sound parameters movement, character, warmth, depth etc.
Synthesis heaven!
Definitely worth a download even if you use it on only one track as the sound quality is excellent for  a free plugin

### 5/5 — Floored

*2024-12-06*

Unbelievable. I cannot believe how many features are on this for FREE. Thunderous low end and pitch range, million different microtonal keys to choose, incredible range of features and thing to tweak around with. 

I’ve made some mean sounding drones already and I’ve only been playing around with it for less than 20 minutes. Very impressed. 
If you’re reading these reviews and you’re skeptical, this will blow you away.

### 4/5 — One fix and it’s good

*2024-02-18*

I love all what this app includes but whenever I leave GarageBand all my cells don’t save and revert back to the first synth. Would be a five star if this didn’t happen. Any way of fixing this?

### 5/5 — Great and very powerful

*2023-11-14*

I like it very much - it has so much to offer!!

### 5/5 — Uh

*2023-10-22*

If you believe in anything make it this,

## Frequently asked questions about SynthMaster One for iPhone

### What is SynthMaster One for iPhone?

SynthMaster One for iPhone is a powerful wavetable synthesizer application designed for iOS devices. It offers an intuitive workflow for creating and designing new sounds with a rich library of wavetables and factory presets.

### What are the key features of SynthMaster One for iPhone?

Key features include true wavetable synthesis, 300 factory presets, AUv3 support for integration with DAWs, Files App integration for easy import/export, real-time modulation feedback, a semi-modular architecture with multiple oscillators and filters, and a 32-step arpeggiator/sequencer.

### How much does SynthMaster One for iPhone cost?

The app is available for free with in-app purchases. While the core app is free, additional presets or features may be available for purchase within the app.

### What are the compatibility requirements for SynthMaster One for iPhone?

The app requires iOS 11 or later for full functionality, including Files App integration. It is designed for the iPhone and supports AUv3, allowing it to run within compatible Digital Audio Workstation (DAW) apps on iOS.

### Who is SynthMaster One for iPhone designed for?

This app is intended for musicians, sound designers, and electronic music producers who want a powerful and versatile wavetable synthesizer on their iPhone. Its features cater to both beginners looking for inspiring presets and experienced users seeking deep sound design capabilities.

## Version history (last 5 releases)

### 1.15.15 — 2024-01-18

bugfixes

### 1.5.13 — 2023-05-24

gui updates and bug fixes

### 1.5.11 — 2023-02-10

bugfixes

### 1.5.9 — 2022-08-20

bugfixes: Stuck notes when used with AUM, distortion curve does not change the effect sound, changing presets quickly may cause a crash

### 1.5.8 — 2022-07-18

New preset bank added (Vandalism Shocking Tech&Slap House)
Added a selection menu for items to restore
Export/Import midi learn parameters
Bug fixes:
- UI copy/paste parameters were not shown
- Some knobs were bind to wrong parameters (Filter 2, Amp Env 2)
- App might sometimes crash while loading presets
- Stuck notes on auv3
- CPU spike may occur while automating parameters during auv3 session

## Apps similar to SynthMaster One for iPhone

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [AudioKit Synth One Synthesizer](https://appshunter.io/ios/app/audiokit-synth-one-synthesizer/id1371050497) | 4.9 (26,818) | Free | Music |
| [E Piano Synth - Keyboard Tiles](https://appshunter.io/ios/app/e-piano-synth-keyboard-tiles/id1513122706) | 4.5 (33) | Free | Music |
| [Groovebox - Beat Synth Studio](https://appshunter.io/ios/app/groovebox-beat-synth-studio/id1242847278) | 4.7 (4,735) | Free | Music |
| [OCTANE Mobile - AUV3](https://appshunter.io/ios/app/octane-mobile-auv3/id1586784492) | 3.4 (89) | Free | Music |
| [Polywave - Wavetable Synth](https://appshunter.io/ios/app/polywave-wavetable-synth/id1579538271) | 4.7 (34) | Free | Music |
| [Flynth - Synth & Arpeggiator](https://appshunter.io/ios/app/flynth-synth-and-arpeggiator/id1509714513) | 4.3 (55) | Free | Music |

## More apps by KV331 Audio

- [SynthMaster Player](https://appshunter.io/ios/app/synthmaster-player/id944155926)
- [SynthMaster One](https://appshunter.io/ios/app/synthmaster-one/id1254353266)
- [SynthMaster 2](https://appshunter.io/ios/app/synthmaster-2/id1566704584)
- [SynthMaster 3 Player](https://appshunter.io/ios/app/synthmaster-3-player/id6757864669)

All apps by KV331 Audio: https://appshunter.io/developer/944155925

## Related topics

[synthmaster](https://appshunter.io/ios/topics/synthmaster) · [synthmaster one for iphone](https://appshunter.io/ios/topics/synthmaster-one-for-iphone) · [synthmaster one](https://appshunter.io/ios/topics/synthmaster-one) · [synthmaster player](https://appshunter.io/ios/topics/synthmaster-player) · [buttersynth](https://appshunter.io/ios/topics/buttersynth) · [audio unit](https://appshunter.io/ios/topics/audio-unit) · [synth one](https://appshunter.io/ios/topics/synth-one) · [cubasis 3](https://appshunter.io/ios/topics/cubasis-3) · [zenology gx](https://appshunter.io/ios/topics/zenology-gx) · [fm synth](https://appshunter.io/ios/topics/fm-synth) · [audiokit synth one](https://appshunter.io/ios/topics/audiokit-synth-one) · [mighty synth sampler](https://appshunter.io/ios/topics/mighty-synth-sampler) · [audiokit synth one j6](https://appshunter.io/ios/topics/audiokit-synth-one-j6) · [soundstorm for nanoleaf](https://appshunter.io/ios/topics/soundstorm-for-nanoleaf) · [versatrans mystop](https://appshunter.io/ios/topics/versatrans-mystop)

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-21.*