# KORG Module Pro vs Midiflow Splitter (Audiobus)

The clearest difference is price: Midiflow Splitter (Audiobus) at $2.99 against KORG Module Pro's $39.99. Midiflow Splitter (Audiobus) also leads on in-app purchases (none vs 20) and iOS requirement (10.2 vs 15.6). KORG Module Pro's advantage is rating (4.6 vs 3.4) and review sentiment (64% vs 31%). On ads and device support there is nothing between them.

KORG Module Pro costs $39.99 and Midiflow Splitter (Audiobus) $2.99 up front. KORG Module Pro sells 20 one-off in-app purchases. Midiflow Splitter (Audiobus) asks for nothing beyond the download.

KORG Module Pro holds the better App Store score, 4.6 against 3.4. That said, the two scores are not equally well evidenced: KORG Module Pro has 1.2K ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 64% of KORG Module Pro's written reviews are positive against 31% of Midiflow Splitter (Audiobus)'s.

KORG Module Pro ships an update monthly, Midiflow Splitter (Audiobus) every 11 months. The most recent releases landed on October 21, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | KORG Module Pro | Midiflow Splitter (Audiobus) |
| --- | --- | --- |
| Price | $39.99 | **$2.99** |
| Rating | **[4.6 (1.2K ratings)](https://appshunter.io/ios/app/korg-module-pro/id932191687/reviews)** | [3.4 (10 ratings)](https://appshunter.io/ios/app/midiflow-splitter-audiobus/id1104669188/reviews) |
| Number of ratings | **1.2K** | 10 |
| Positive reviews | **63.8% of reviews** | 31.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 11 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 1.7 GB | 5 MB |
| Requires iOS | 15.6 | **10.2** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KORG INC.](https://appshunter.io/developer/363714046) | [Johannes Doerr](https://appshunter.io/developer/622204117) |

## What reviewers say

### KORG Module Pro

[App page](https://appshunter.io/ios/app/korg-module-pro/id932191687)

This app provides a high-quality mobile sound module for iOS devices, offering professional piano and keyboard sounds. It's ideal for live performance and music production, allowing users to create studio-quality music anywhere with just an iOS device and a MIDI keyboard. Expandable sound libraries and integration with other music apps enhance its capabilities.

**Highlights:** High-quality piano and keyboard sound engines, Six dedicated sound engines, Ultra-low latency, AUv3 support, Set list function with score viewer, Expansion sound libraries, Performance recording and sharing

**Features:** Family Sharing

**In-app purchases (20)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hybrid Synth Essential 2 | $3.99 | one-time |
| Future Synths | $4.99 | one-time |
| London Symphonic Orchestra | $6.99 | one-time |
| Dream Pop | $6.99 | one-time |
| Petrichor | $6.99 | one-time |
| Shoulder Pads | $6.99 | one-time |
| Space Western | $6.99 | one-time |
| Wurley Electric Piano | $9.99 | one-time |
| Mellow Tape Keyboard | $9.99 | one-time |
| Soundiron Voice of Rapture Soprano | $9.99 | one-time |
| Wild Kits | $9.99 | one-time |
| Dreamy Synths | $9.99 | one-time |
| Organ & Clav Collection | $19.99 | one-time |
| TRITON Best Selection | $19.99 | one-time |
| 80's Electric Piano | $19.99 | one-time |
| Orchestral Dreams | $19.99 | one-time |
| Classic EP-88M | $19.99 | one-time |
| Ivory Mobile Grand | $29.99 | one-time |
| Module Performance Expansion | $29.99 | one-time |
| Ivory Mobile American D | $29.99 | one-time |

**What reviewers like**

- 🎹 Excellent sound quality
- 🎨 Versatile sound library
- 📋 Useful set list functionality
- 🔌 Good MIDI integration
- 💻 Seamless integration with Korg Gadget

**What reviewers complain about**

- 🔇 Low volume/output issues
- 🐛 Crashes and stability problems
- 🔀 Inconsistent behavior when switching patches
- 🔒 Difficulty restoring purchased content
- 🔍 Limited sound customization options

**Reported bugs**

- Purchased content not appearing or disappearing
- Sustain pedal not functioning properly
- Polyphony issues causing notes to drop out
- Compatibility problems with newer iOS versions

**Requested features**

- Add split and layer functionality
- Implement MIDI learn capabilities
- Improve set list management with reordering and copying
- Add support for background audio and AUv3
- Provide better integration with other Korg apps


### Midiflow Splitter (Audiobus)

[App page](https://appshunter.io/ios/app/midiflow-splitter-audiobus/id1104669188)

This MIDI effect app allows musicians to divide their external keyboard into multiple zones, assigning each zone to different synth apps. It offers powerful configuration options for split and layer setups, including octave transposition and controller assignment per synth.

**Highlights:** Create split and layer configurations, Assign key zones to synth apps, Transpose each synth app in octaves, Control active controllers per synth, Solo individual synth sounds, Supports multiple keyboards

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is KORG Module Pro free?

KORG Module Pro costs $39.99, and also offers in-app purchases.

### Is Midiflow Splitter (Audiobus) free?

Midiflow Splitter (Audiobus) costs $2.99, with no in-app purchases.

### Which has better reviews, KORG Module Pro or Midiflow Splitter (Audiobus)?

KORG Module Pro is rated higher. KORG Module Pro averages 4.6 out of 5 from 1.2K ratings, while Midiflow Splitter (Audiobus) averages 3.4 from 10 ratings.

### Do KORG Module Pro or Midiflow Splitter (Audiobus) have ads?

Neither KORG Module Pro nor Midiflow Splitter (Audiobus) shows ads.

### Which is updated more often, KORG Module Pro or Midiflow Splitter (Audiobus)?

KORG Module Pro ships an update monthly, and Midiflow Splitter (Audiobus) every 11 months. Most recently, KORG Module Pro was updated on October 21, 2026 and Midiflow Splitter (Audiobus) on October 5, 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.*