# KORG Module vs AudioKit Synth One Synthesizer

The clearest difference is review sentiment: AudioKit Synth One Synthesizer at 95% against KORG Module's 52%. AudioKit Synth One Synthesizer also leads on in-app purchases (none vs 21) and rating (4.9 vs 4.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. KORG Module sells 21 one-off in-app purchases. AudioKit Synth One Synthesizer asks for nothing beyond the download.

AudioKit Synth One Synthesizer holds the better App Store score, 4.9 against 4.6. That said, the two scores are not equally well evidenced: AudioKit Synth One Synthesizer has 27K ratings behind it against 785, so its average is the more settled of the two. Written reviews point the same way: 52% of KORG Module's written reviews are positive against 95% of AudioKit Synth One Synthesizer's.

Both ship on a similar rhythm, roughly monthly. Both last shipped on October 26, 2026.

## The numbers

| Metric | KORG Module | AudioKit Synth One Synthesizer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (785 ratings)](https://appshunter.io/ios/app/korg-module/id1048875111/reviews) | **[4.9 (27K ratings)](https://appshunter.io/ios/app/audiokit-synth-one-synthesizer/id1371050497/reviews)** |
| Number of ratings | 785 | **27K** |
| Positive reviews | 51.7% of reviews | **94.5% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | Free with in-app purchases | **Free** |
| Size | 1.7 GB | 34 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KORG INC.](https://appshunter.io/developer/363714046) | [AudioKit Pro](https://appshunter.io/developer/1307785645) |

## What reviewers say

### KORG Module

[App page](https://appshunter.io/ios/app/korg-module/id1048875111)

This app offers professional piano and keyboard sounds for mobile devices. The free version provides access to high-quality piano sounds, with options to unlock more sound libraries and features through in-app purchases or by connecting Korg MIDI controllers.

**Highlights:** High-quality piano and keyboard sounds, Customizable sound sets with over 30 libraries, AUv3 support, Ultra-low latency sound engine, Unlock sounds with Korg MIDI controllers

**Features:** Family Sharing

**In-app purchases (21)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 7-day trial:TRITON Best select | Free | one-time |
| 7-day trial : Organ & Clav | Free | one-time |
| 7-day trial : Module Perf Exp | Free | one-time |
| 7-day trial : Ivory Grand | Free | one-time |
| 7-day trial : Ivory American D | Free | one-time |
| 7-day trial:Essential Complete | Free | one-time |
| 7-day trial Hybrid 2 | Free | one-time |
| 7-day trial : 80s Dance Pop | Free | one-time |
| 7-day Trial : GENERAL 128 | Free | one-time |
| 7-day trial : OASYS Piano | Free | one-time |
| 7-day Trial: M1 Best Selection | Free | one-time |
| 7-day Trial : Wild Kits | Free | one-time |
| 7-day Trial : Neo Soul | Free | one-time |
| 7-day trial : 80's E.Piano | Free | one-time |
| 7-day Trial : Classic EP-88M | Free | one-time |
| 7-day trial : Dreamy Synths | Free | one-time |
| Hybrid Synth Pack 2 | $4.99 | one-time |
| Space Western | $6.99 | one-time |
| TRITON Best Selection | $19.99 | one-time |
| Module Performance Expansion | $29.99 | one-time |
| Essential Complete | $39.99 | one-time |

**What reviewers like**

- 🎹 Great sounds and interface
- 🎨 Realistic piano and organ sounds
- 💻 Works well as an AUv3 plugin
- 🔍 Helpful as a teaching tool
- 🎚️ Excellent sound quality and options

**What reviewers complain about**

- 🔁 Frequent need to restore purchases
- ⚠️ Compatibility issues with Korg hardware
- 🔒 Confusing purchase options and restrictions
- 🔋 Causes device heating issues
- 🔇 Low volume compared to other apps

**Reported bugs**

- Purchased sounds disappearing after updates
- Inability to delete individual modules to save space
- Inconsistent behavior with Bluetooth MIDI controllers
- Crashes when using certain expansion packs

**Requested features**

- Add virtual pitch bend and modulation wheels
- Improve Gadget integration and availability of IAPs
- Implement AUv3 support for better integration
- Provide a more intuitive and streamlined interface
- Add more instrument categories like brass, woodwinds, and Latin percussion


### AudioKit Synth One Synthesizer

[App page](https://appshunter.io/ios/app/audiokit-synth-one-synthesizer/id1371050497)

This is a free, open-source professional synthesizer app for iOS devices. It offers over 300 presets, MIDI support, a sequencer, and vintage-inspired filters. Learn music production basics and create your own sounds.

**Highlights:** Over 300+ Presets, MIDI Support, Vintage-Style Sequencer, Analog Filters, Expressive Arpeggiators, Open-Source

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 😎 Easy to use
- 🔥 Clean patches
- 👍 Awesome synth
- 🎸 Works great with GarageBand
- 🤩 Absolutely stunning

**What reviewers complain about**

- 🤔 No AU support yet
- 🤔 Crashes with Audiobus 3
- 🤔 Poor palette of sounds
- 🤔 Mod wheel issues
- 🤔 Occasional crashes

**Reported bugs**

- Login screen freezes
- Incompatible with older devices
- Keyboard issues on iPhone
- Crashes with Audiobus 3
- Mod wheel issues

**Requested features**

- Add AU support
- Add just intonation feature
- Add dotted-8th-note delay option
- Add more sound packs
- Add drum machine/sequencing capabilities


## Frequently asked questions

### Is KORG Module free?

KORG Module is free to download, with in-app purchases available.

### Is AudioKit Synth One Synthesizer free?

AudioKit Synth One Synthesizer is free to download, with no in-app purchases.

### Which has better reviews, KORG Module or AudioKit Synth One Synthesizer?

AudioKit Synth One Synthesizer is rated higher. KORG Module averages 4.6 out of 5 from 785 ratings, while AudioKit Synth One Synthesizer averages 4.9 from 27K ratings.

### Do KORG Module or AudioKit Synth One Synthesizer have ads?

Neither KORG Module nor AudioKit Synth One Synthesizer shows ads.

### Which is updated more often, KORG Module or AudioKit Synth One Synthesizer?

KORG Module ships an update monthly, and AudioKit Synth One Synthesizer monthly. Most recently, KORG Module was updated on October 26, 2026 and AudioKit Synth One Synthesizer on October 26, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*