# KORG Module Pro vs SynthMaster 2

The clearest difference is price: SynthMaster 2 at $14.99 against KORG Module Pro's $39.99. KORG Module Pro's advantage is ads (none vs shown) and chart position (#142 vs unranked). On rating, review sentiment, ratings volume and update cadence there is nothing between them.

KORG Module Pro costs $39.99 and SynthMaster 2 $14.99 up front. KORG Module Pro sells 20 one-off in-app purchases and SynthMaster 2 sells 32 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

SynthMaster 2 holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 1.2K and 451 respectively. Written reviews point the same way: 64% of KORG Module Pro's written reviews are positive against 68% of SynthMaster 2's.

KORG Module Pro ships an update monthly, SynthMaster 2 every 3 weeks. The most recent releases landed on October 12, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | KORG Module Pro | SynthMaster 2 |
| --- | --- | --- |
| Price | $39.99 | **$14.99** |
| Rating | [4.6 (1.2K ratings)](https://appshunter.io/ios/app/korg-module-pro/id932191687/reviews) | **[4.8 (451 ratings)](https://appshunter.io/ios/app/synthmaster-2/id1566704584/reviews)** |
| Number of ratings | **1.2K** | 451 |
| Positive reviews | 63.8% of reviews | **68.5% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#142** | — |
| Size | 1.7 GB | 918 MB |
| Requires iOS | 15.6 | **15** |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [KORG INC.](https://appshunter.io/developer/363714046) | [KV331 Audio](https://appshunter.io/developer/944155925) |

## What reviewers say

### KORG Module Pro

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

**Currently charting:** #142 Top Paid · Music (US App Store)

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 |
| Wurley Electric Piano | $4.99 | one-time |
| Mellow Tape Keyboard | $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 |
| Organ & Clav Collection | $9.99 | one-time |
| TRITON Best Selection | $9.99 | one-time |
| 80's Electric Piano | $9.99 | one-time |
| Orchestral Dreams | $9.99 | one-time |
| Classic EP-88M | $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 |
| Ivory Mobile Grand | $14.99 | one-time |
| Module Performance Expansion | $19.99 | 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


### SynthMaster 2

[App page](https://appshunter.io/ios/app/synthmaster-2/id1566704584)

This powerful software synthesizer offers a vast array of sound design capabilities, including multiple oscillator modes, extensive modulation options, and a wide selection of filters. Explore over 1000 factory presets or create your own unique sounds. Available as a standalone app or AUv3 plugin.

**Highlights:** Multiple oscillator modes (Basic, Additive, Wavetable, Vector), Extensive modulation architecture, 6 filter categories, Import custom wave files, 1000+ factory presets, Standalone app and AUv3 plugin

**In-app purchases (32)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BigTone Tableworks Vol.2 | $1.99 | one-time |
| Burak Yeter Synth Sounds Vol1 | $1.99 | one-time |
| Aiyn Zahev Expansion 1 | $1.99 | one-time |
| BigTone Tableworks Vol.1 | $1.99 | one-time |
| Michael Kastrup Expansion | $1.99 | one-time |
| EDM Stars Volume 1 | $1.99 | one-time |
| Nori Ubukata Pop Hits Vol.4 | $1.99 | one-time |
| Rob Lee EDM Expansion Vol.2 | $1.99 | one-time |
| Alonso Sound Future Rave | $1.99 | one-time |
| Nori Ubukata Pop Hits Vol.1 | $1.99 | one-time |
| BigTone Techno Bits Vol.1 | $1.99 | one-time |
| Club Sequences Vol.1 | $2.99 | one-time |
| Historical Synth Giants Vol.3 | $2.99 | one-time |
| Dawn of Electronic Music Vol.2 | $2.99 | one-time |
| Nori Ubukata Art Rock Basics | $2.99 | one-time |
| BigTone Analog Basics 02 | $4.99 | one-time |
| BigTone Analog Basics | $4.99 | one-time |
| BigTone Signature Sounds Vol.1 | $4.99 | one-time |
| NU Sounds of the World | $4.99 | one-time |
| Historical Synth Giants Vol.4 | $4.99 | one-time |
| Historical Synth Giants Vol.1 | $4.99 | one-time |
| Historical Synth Giants Vol.2 | $4.99 | one-time |
| Japan Vintage | $4.99 | one-time |
| NatLife Future Bass Sounds | $4.99 | one-time |
| Danyella EDM Expansion Vol.1 | $4.99 | one-time |
| Dawn of Electronic Music Vol.1 | $4.99 | one-time |
| Dawn of Electronic Music Vol.3 | $4.99 | one-time |
| Rob Lee EDM Expansion Vol.3 | $4.99 | one-time |
| Natlife Disco Funk | $4.99 | one-time |
| Insigne Essentials 4 Clubbin | $4.99 | one-time |
| Desktop Presets Upgrade | $9.99 | one-time |
| All Expansions Bundle | $49.99 | one-time |

**What reviewers like**

- 🚀 Best synth on iPad
- 👍 Delicious sound
- 👍 Tremendously powerful synth
- 👍 Great synth with complex possibilities and great sound(s)
- 👍 Perfeito

**What reviewers complain about**

- 🐛 Auswahl der Modulationsquellen funktioniert nicht richtig
- 🐛 Echt schlecht
- 🐛 Broken Preset System for a powerful synth
- 🐛 Please fix the OSC behavior on Square and Saw
- 🐛 Preset issues

**Reported bugs**

- Presets not loading correctly
- Modulation not working after loading project
- Skin resets to default
- App crashes frequently

**Requested features**

- Pitch bend/glide for imported samples
- Integration with AUM audio mixer


## Frequently asked questions

### Is KORG Module Pro free?

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

### Is SynthMaster 2 free?

SynthMaster 2 costs $14.99, and also offers in-app purchases.

### Which has better reviews, KORG Module Pro or SynthMaster 2?

SynthMaster 2 is rated higher. KORG Module Pro averages 4.6 out of 5 from 1.2K ratings, while SynthMaster 2 averages 4.8 from 451 ratings.

### Do KORG Module Pro or SynthMaster 2 have ads?

SynthMaster 2 shows ads; KORG Module Pro does not.

### Which is updated more often, KORG Module Pro or SynthMaster 2?

KORG Module Pro ships an update monthly, and SynthMaster 2 every 3 weeks. Most recently, KORG Module Pro was updated on October 12, 2026 and SynthMaster 2 on October 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.*