# KORG Module Pro vs iDousyn Lite

The clearest difference is price: iDousyn Lite at Free against KORG Module Pro's $39.99. KORG Module Pro's advantage is ads (none vs shown) and review sentiment (64% vs 36%). On rating, ratings volume, in-app purchases and monetization model there is nothing between them.

iDousyn Lite is free to download; KORG Module Pro costs $39.99 up front. KORG Module Pro sells 20 one-off in-app purchases and iDousyn Lite sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

KORG Module Pro holds the better App Store score, 4.6 against 4.4. Both are backed by a comparable volume of ratings — 1.2K and 697 respectively. Written reviews point the same way: 64% of KORG Module Pro's written reviews are positive against 36% of iDousyn Lite's.

KORG Module Pro ships an update monthly, iDousyn Lite every 3 months. The most recent releases landed on September 26, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | KORG Module Pro | iDousyn Lite |
| --- | --- | --- |
| Price | $39.99 | **Free** |
| Rating | **[4.6 (1.2K ratings)](https://appshunter.io/ios/app/korg-module-pro/id932191687/reviews)** | [4.4 (697 ratings)](https://appshunter.io/ios/app/idousyn-lite/id992557221/reviews) |
| Number of ratings | **1.2K** | 697 |
| Positive reviews | **63.9% of reviews** | 36.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 3 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 1.7 GB | 67 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KORG INC.](https://appshunter.io/developer/363714046) | [Jorge Lozada](https://appshunter.io/developer/421852863) |

## 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 | $4.99 | 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 American D | $29.99 | 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


### iDousyn Lite

[App page](https://appshunter.io/ios/app/idousyn-lite/id992557221)

This app transforms your device into a versatile musical instrument, offering a wide range of high-quality sounds and intuitive tools for creating melodies and harmonies. Explore authentic pianos, basses, guitars, and more with innovative features like Chord Pads and DSP effects.

**Highlights:** 8-Octave Virtual Keyboard, Chord Pads with Strum Options, High-Fidelity Oscillators, DSP Effects (Reverb, Delay, EQ), Dual-Channel Sound Blending, MIDI Controller Support, Export to WAV, AIFF, CAF, M4A

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |

**What reviewers like**

- 🎵 High quality sounds
- 👍 Well-designed GUI layout

**What reviewers complain about**

- 📢 Excessive ads and pop-ups
- ⏱️ High latency and slow keyboard response
- 🔄 Intrusive review prompts interrupting usage
- 🎹 Instrument switching bug causing audio overlap

**Reported bugs**

- Piano audio continues playing when switching to other instruments
- App locks up until user submits a review
- Frequent pop-ups and ads interrupt functionality

**Requested features**

- Ringtone customization options


## Frequently asked questions

### Is KORG Module Pro free?

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

### Is iDousyn Lite free?

iDousyn Lite is free to download, with in-app purchases available.

### Which has better reviews, KORG Module Pro or iDousyn Lite?

KORG Module Pro is rated higher. KORG Module Pro averages 4.6 out of 5 from 1.2K ratings, while iDousyn Lite averages 4.4 from 697 ratings.

### Do KORG Module Pro or iDousyn Lite have ads?

iDousyn Lite shows ads; KORG Module Pro does not.

### Which is updated more often, KORG Module Pro or iDousyn Lite?

KORG Module Pro ships an update monthly, and iDousyn Lite every 3 months. Most recently, KORG Module Pro was updated on September 26, 2026 and iDousyn Lite on September 13, 2026.

---

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