# KORG Module Pro vs Retro MIDI Player Mobile

The clearest difference is price: Retro MIDI Player Mobile at $2.99 against KORG Module Pro's $39.99. Retro MIDI Player Mobile also leads on in-app purchases (none vs 10) and update cadence (every 4 days vs monthly). KORG Module Pro's advantage is iOS requirement (15.6 vs 17.0). On ads and device support there is nothing between them.

KORG Module Pro costs $39.99 and Retro MIDI Player Mobile $2.99 up front. KORG Module Pro sells 10 one-off in-app purchases. Retro MIDI Player Mobile asks for nothing beyond the download.

KORG Module Pro ships an update monthly, Retro MIDI Player Mobile every 4 days. The most recent releases landed on November 8, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | KORG Module Pro | Retro MIDI Player Mobile |
| --- | --- | --- |
| Price | $39.99 | **$2.99** |
| Rating | **[4.6 (1.2K ratings)](https://appshunter.io/ios/app/korg-module-pro/id932191687/reviews)** | — |
| Number of ratings | **1.2K** | — |
| Positive reviews | 63.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 1.7 GB | 40 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [KORG INC.](https://appshunter.io/developer/363714046) | [Hideo Suzuki](https://appshunter.io/developer/6800318757) |

## 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 (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hybrid Synth Essential 2 | $4.99 | one-time |
| Wurley Electric Piano | $9.99 | one-time |
| Mellow Tape Keyboard | $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 |

**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


### Retro MIDI Player Mobile

[App page](https://appshunter.io/ios/app/retro-midi-player-mobile/id6802171148)

**Features:** iPhone Duo 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 Retro MIDI Player Mobile free?

Retro MIDI Player Mobile costs $2.99, with no in-app purchases.

### Do KORG Module Pro or Retro MIDI Player Mobile have ads?

Neither KORG Module Pro nor Retro MIDI Player Mobile shows ads.

### Which is updated more often, KORG Module Pro or Retro MIDI Player Mobile?

KORG Module Pro ships an update monthly, and Retro MIDI Player Mobile every 4 days. Most recently, KORG Module Pro was updated on November 8, 2026 and Retro MIDI Player Mobile on November 10, 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.*