KORG Module Pro vs SynthMaster 2
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KORG Module Pro
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.
- 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
Read full descriptionHide full description
The best sounds, available to everyone. Announcing a new high-quality mobile sound module app for iOS! • Achieved the #1 position*on the App Store* in the Top Paid Music App category *USA, UK, Japan, Germany, France, Italy, Canada and much more! Ideal for performance and music production, KORG Module is a high-quality sound module app for iOS that contains a professional sound library. With just your iPad/iPhone and a MIDI keyboard such as the new microKEY, you can play studio-quality keyboard and grand piano sounds anywhere. You can also use the sounds of KORG Module for the KORG Gadget music production app. Maintaining its position at the forefront of mobile music apps, KORG now offers you a new style of performance and production with KORG Module for iOS. FEATURE HIGHLIGHTS ● Stunningly high-quality piano and a full range of keyboard sound engines ● Six dedicated sound engines : Acoustic Piano/Electric Piano/Clav/Organ/Multi/Hybrid ● Ultra-low latency sound engine ● AUv3 support ● With just an iPad/iPhone and the new microKEY, you can enjoy great sound anywhere ● Mobile music production in tandem with KORG Gadget ● Convenient set list function with a PDF/image score viewer and music player ● Power-up even more with expansion sound libraries: TRITON Best Selection / Ivory Mobile Grand and more! ● Easily record your performances, and share song sketches on SoundCloud ● Integrating iOS technology that's indispensable for the mobile environment *** Stunningly high-quality piano and a full range of keyboard sound engines *** KORG Module has five dedicated sound engines, providing a number of high-quality sounds that can be played back on your iOS using the "NATIVE ENGINE”. These engines feature technology that was developed for KORG's historic line of workstations and synthesizers including: Acoustic Piano, Electric Piano, Clav, Organ, Multi, and Hybrid. Each display has carefully selected parameters, making it convenient and easy to adjust the sounds. We’ve also carefully ensured ideal playability and designed the system for ultra-low latency. Once you experience the quality of the sounds being produced from the slim body of your iPad, you'll agree that Module is radically different than anything else currently on the market. *** With just an iPad/iPhone and the new microKEY, you can enjoy great sound anywhere *** KORG Module and the microKEY are the best possible combination for a mobile performance environment. With the new microKEY which supports a damper, or the microKEY Air which provides a wireless connection via Bluetooth MIDI, your iPad can transform into a high-quality sound module. In your room, in a practice studio, or performing on stage,, it's easy to set up and immerse yourself in a superb playing experience wherever you are. Of course you can also use any MIDI keyboard that can connect to your iPad via Apple Lightning - USB camera adapter. The velocity curve function conforms the sound to your playing dynamics, so you'll be able to perform comfortably using any MIDI keyboard. Even if you don't have a MIDI keyboard, you can use the apps on-screen keyboard, phrase function, or MIDI player to play the sounds. The MIDI player can load and play standard MIDI files for your listening enjoyment. *** Mobile music production in tandem with KORG Gadget *** You can also use the high-quality KORG Module sounds inside KORG Gadget, the mobile music production app. If you have Module and Gadget, the five tools Salzburg, Montreal, Alexandria, Firenze, and Glasgow are added inside, allowing access the same way as Gadget. These five powerful gadgets will add even more variety to your music productions, raising your music to the next level. Whether for performance or for production, both of these apps deliver ultimate sound. More info at korg.com
SynthMaster 2
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.
- 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
Read full descriptionHide full description
KV331 Audio is proud to announce the availability of their award winning software synthesizer SynthMaster 2.9 on iOS platform. As being the first app developed using KV331 Audio’s new cross-platform UI framework, SynthMaster 2 runs as a standalone app or AUv3 plugin on iPads with iOS 11 and above. SynthMaster 2 supports native resolutions of various iPad devices. User interfaces are provided for 9.7, 11 and 12.9 inch iPads in 4 different skins (Blue, White, Dark, Proto). Separate interfaces are provided for the AudioUnit plugin as well. SynthMaster 2 comes with 1000 factory presets designed by world class sound designers such as BigTone, Nori Ubukata, NatLife and Yuli Yolo. Thanks to the comprehensive preset browsing features, users can easily filter presets by author name, bank name, instrument type or preset name and find the sounds that they are looking for. There’s also an IAP Shop, which lets users purchase additional sounds: 1. "Desktop Presets Upgrade": This IAP adds all factory presets in SynthMaster 2.9, increasing the total preset count to 2000. 2. "All Expansions Bundle": This IAP adds all current 38 SynthMaster preset expansion banks. Sound Engine: At the heart of SynthMaster 2’s powerful sound engine lies its oscillators, modulators, and filters. Oscillators: The oscillators can operate in 4 different modes to generate sound: 1. In Basic mode, the oscillator plays single cycle waveforms or samples. With the Oscillator Unison turned on, up to 8 voices per oscillator can be played. 2. In Additive mode, 8 Basic oscillators can be stacked up to create richer tones. 3. In Wavetable mode, the oscillator can play wavetables with up to 256 frames. 4. In Vector mode, 4 Basic oscillators are mixed in 2 dimensions. Modulators: Modulators are simply basic oscillators that can be added to other oscillators or modulate other oscillators’ or modulators’ phases. By connecting modulators to other oscillators or modulators, complex FM tones can be synthesized. Importing Wave Files into SynthMaster: While designing sounds, users can easily import wave files into SynthMaster 2. SynthMaster 2 can categorize those files into waveforms, wavetables or multi samples and import them accordingly. Filters: Once the sound is generated by the oscillators it goes through SynthMaster’s filters, which can operate in 6 different categories: Digital, VAnalog, Ladder, Diode Ladder, State Variable and Bite. Custom distortion can be applied before or after the filters as well. Modulation Architecture: SynthMaster 2 features a comprehensive modulation architecture with a wide range of modulation sources: 1. MIDI controls 2. Macros controls 3. 4 ADSR envelopes per layer 4. 4 Multisegmented envelopes per payer 5. 4 LFOs per layer 6. 4 Sequencers per layer 7. 4 Keyscalers per layer There’s real-time visual feedback that lets users see how modulation sources and targets are changing when a note is being played. This is extremely helpful when designing sounds with SynthMaster 2. New modulations can be created easily by dragging and dropping a modulation source onto a knob or slider control. Users can easily see which controls are modulated by a modulation source by clicking on that source. Controls that are being modulated by that source will display modulation amounts. By long pressing a control, the modulation amount can be edited without the need to go through the mod matrix. Arp/Sequencer: SynthMaster features a comprehensive arpeggiator / sequencer with 32 steps. Users can easily create sequences by recording steps one by one. Effects: Each of the 2 layers in SynthMaster has 5 insert effect slots. 13 different types of effects can be instantiated in any of those slots. There are also 2 global effect send busses which can be used to create more complex effect routings.
Screenshots
Verdict
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 (#131 vs unranked). On rating, review sentiment, ratings volume and update cadence there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | KORG Module Pro | SynthMaster 2 |
|---|---|---|
| Price | $39.99 | $14.99 — better |
| Rating | 4.6 (1.2K ratings) | 4.8 (451 ratings) — better |
| Positive reviews | 63.8% of reviews | 68.5% of reviews — better |
| Number of ratings | 1.2K — better | 451 |
| Update frequency | Monthly | Every 3 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | #131 — better | — |
| Devices | iPhone, iPad, iPod — better | iPad |
| Requires iOS | 15.6 | 15 — better |
| Further details — not scored | ||
| Size | 1.7 GB | 918 MB |
| Age rating | 4+ | 4+ |
| Developer | KORG INC. | KV331 Audio |
Customer experience
KORG Module Pro
SynthMaster 2
User reviews
KORG Module Pro
From 1.2K App Store ratingsWhat we love
- 🎹 Excellent sound quality
- 🎨 Versatile sound library
- 📋 Useful set list functionality
- 🔌 Good MIDI integration
- 💻 Seamless integration with Korg Gadget
Room to improve
- 🔇 Low volume/output issues
- 🐛 Crashes and stability problems
- 🔀 Inconsistent behavior when switching patches
- 🔒 Difficulty restoring purchased content
- 🔍 Limited sound customization options
SynthMaster 2
From 451 App Store ratingsWhat we love
- 🚀 Best synth on iPad
- 👍 Delicious sound
- 👍 Tremendously powerful synth
- 👍 Great synth with complex possibilities and great sound(s)
- 👍 Perfeito
Room to improve
- 🐛 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
Bugs and requests
KORG Module Pro
Reported bugs
4 issues- 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
5 requests- 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
Reported bugs
4 issues- Presets not loading correctly
- Modulation not working after loading project
- Skin resets to default
- App crashes frequently
Requested features
2 requests- Pitch bend/glide for imported samples
- Integration with AUM audio mixer
In-app purchases
KORG Module Pro
- Hybrid Synth Essential 2$3.99
- Wurley Electric Piano$4.99
- Mellow Tape Keyboard$4.99
Show 17 moreShow fewer
- Future Synths$4.99
- London Symphonic Orchestra$6.99
- Dream Pop$6.99
- Petrichor$6.99
- Shoulder Pads$6.99
- Space Western$6.99
- Organ & Clav Collection$9.99
- TRITON Best Selection$9.99
- 80's Electric Piano$9.99
- Orchestral Dreams$9.99
- Classic EP-88M$9.99
- Soundiron Voice of Rapture Soprano$9.99
- Wild Kits$9.99
- Dreamy Synths$9.99
- Ivory Mobile Grand$14.99
- Module Performance Expansion$19.99
- Ivory Mobile American D$29.99
SynthMaster 2
- BigTone Tableworks Vol.2$1.99
- Burak Yeter Synth Sounds Vol1$1.99
- Aiyn Zahev Expansion 1$1.99
Show 29 moreShow fewer
- BigTone Tableworks Vol.1$1.99
- Michael Kastrup Expansion$1.99
- EDM Stars Volume 1$1.99
- Nori Ubukata Pop Hits Vol.4$1.99
- Rob Lee EDM Expansion Vol.2$1.99
- Alonso Sound Future Rave$1.99
- Nori Ubukata Pop Hits Vol.1$1.99
- BigTone Techno Bits Vol.1$1.99
- Club Sequences Vol.1$2.99
- Historical Synth Giants Vol.3$2.99
- Dawn of Electronic Music Vol.2$2.99
- Nori Ubukata Art Rock Basics$2.99
- BigTone Analog Basics 02$4.99
- BigTone Analog Basics$4.99
- BigTone Signature Sounds Vol.1$4.99
- NU Sounds of the World$4.99
- Historical Synth Giants Vol.4$4.99
- Historical Synth Giants Vol.1$4.99
- Historical Synth Giants Vol.2$4.99
- Japan Vintage$4.99
- NatLife Future Bass Sounds$4.99
- Danyella EDM Expansion Vol.1$4.99
- Dawn of Electronic Music Vol.1$4.99
- Dawn of Electronic Music Vol.3$4.99
- Rob Lee EDM Expansion Vol.3$4.99
- Natlife Disco Funk$4.99
- Insigne Essentials 4 Clubbin$4.99
- Desktop Presets Upgrade$9.99
- All Expansions Bundle$49.99
Questions
Is KORG Module Pro free?
Is SynthMaster 2 free?
Which has better reviews, KORG Module Pro or SynthMaster 2?
Do KORG Module Pro or SynthMaster 2 have ads?
Which is updated more often, KORG Module Pro or SynthMaster 2?
Other comparisons















