iMIDIPatchbay vs KORG Module Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iMIDIPatchbay
Organize your entire MIDI setup from a central point. Easily create split and layer configurations, send program changes, and filter controller data for external sound devices. Store and recall configurations as songs, and manage setlists for performances.
- Create split and layer configurations
- Send Program Changes and control changes
- Transpose sounds and rig
- Filter controller data
- Store and recall configurations as songs
- Create setlists for performances
- Link PDF documents to songs
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iMIDIPatchbay lets you organize your whole MIDI setup from one central point. Do you often divide your keyboards into zones to assign different sounds which might come from external sound expanders? Do you need to send Program Changes to your MIDI equipment? Do you want to integrate your music making apps into your live gear? Well, then iMIDIPatchbay is definitely the right tool for you! LIST OF FEATURES - Create split and layer configurations very easily - Support for up to 4 master keyboards (In-App Purchase) - Send volume and other control changes (reverb, chorus, pan) to your sound devices - Send Program Changes to your sound devices - Transpose sounds in octave steps - Transpose the hole rig in half-tone steps - Filter controller data (sustain, pitch-bend, modulation, expression, aftertouch) - Store configurations as songs for later recall - Switch song of iMIDIPatchbay from another app or MIDI device via Program Changes - Switch songs while holding down keys or holding e.g. the sustain pedal without getting stuck notes - Play all your sounds even if you don't have all your master keyboards with you: "master switches" allow you to make another master act as a substitute for it (advanced feature!) - Create setlists to arrange songs for your performances (In-App Purchase) - Link multiple PDF documents (e.g. sheet music or notes) from Dropbox to each song (In-App Purchase) - Backup settings to Dropbox - UI which is optimized for live usage WHAT EXACTLY CAN I DO WITH iMIDIPatchbay? As a keyboard player, you most probably know about splitting and layering sounds. While this can be done relatively easy on professional keyboards, it becomes more complex if your gear consists of multiple keyboards and sound expanders. iMIDIPatchbay makes building such configurations a lot easier than it has ever been before. After connecting your keyboards and other MIDI devices to the iPad, you can easily create split zones and assign sounds of your MIDI devices to them. It's also possible to route the MIDI data to other apps if they have a virtual MIDI port. Furthermore, you can filter out controllers which is great if you want e.g. pitch bend or sustain to affect only a subset of the active sounds. WHAT DO I NEED TO GET STARTED? You need a CoreMIDI interface to connect your keyboards and sound expanders to the iPad. WHERE CAN I LEARN MORE? Go to iMIDIPatchbay's website in order to find a more detailed description of the app. If you encounter problems, please let me help you (you find the mail address on the website and on the info screen within the app). Please note that there is no way to respond to you if you post a review on the App Store instead. Always email me first! If you like the app, let others know by submitting a good review on the App Store. And feel free to send me suggestions for further releases.
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
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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
Screenshots
Verdict
The clearest difference is price: iMIDIPatchbay at $14.99 against KORG Module Pro's $39.99. iMIDIPatchbay also leads on iOS requirement (12.0 vs 15.6). KORG Module Pro's advantage is rating (4.6 vs 4.2) and ratings volume (1.2K vs 18). On review sentiment, update cadence, ads and in-app purchases 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
iMIDIPatchbay costs $14.99 and KORG Module Pro $39.99 up front. iMIDIPatchbay sells 2 one-off in-app purchases and KORG Module Pro sells 20 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
KORG Module Pro holds the better App Store score, 4.6 against 4.2. That said, the two scores are not equally well evidenced: KORG Module Pro has 1.2K ratings behind it against 18, so its average is the more settled of the two. Written reviews complicate that: 67% of iMIDIPatchbay's written reviews are positive against 64% of KORG Module Pro's, so the app with the better star average is not the one people write more warmly about.
iMIDIPatchbay ships an update every 2 months, KORG Module Pro monthly. The most recent releases landed on October 2, 2026 and October 14, 2026 respectively.
| Parameter | iMIDIPatchbay | KORG Module Pro |
|---|---|---|
| Price | $14.99 — better | $39.99 |
| Rating | 4.2 (18 ratings) | 4.6 (1.2K ratings) — better |
| Positive reviews | 67.2% of reviews — better | 63.8% of reviews |
| Number of ratings | 18 | 1.2K — better |
| Update frequency | Every 2 months | Monthly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | — | #178 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 17 MB | 1.7 GB |
| Age rating | 4+ | 4+ |
| Developer | Johannes Doerr | KORG INC. |
Customer experience
iMIDIPatchbay
KORG Module Pro
Bugs and requests
iMIDIPatchbay
Not enough reviews yet to summarise bugs or 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
In-app purchases
iMIDIPatchbay
- Multiple masters$9.99
- Setlists$9.99
KORG Module Pro
- Hybrid Synth Essential 2$3.99
- Future Synths$4.99
- London Symphonic Orchestra$6.99
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- Dream Pop$6.99
- Petrichor$6.99
- Shoulder Pads$6.99
- Space Western$6.99
- Wurley Electric Piano$9.99
- Mellow Tape Keyboard$9.99
- Soundiron Voice of Rapture Soprano$9.99
- Wild Kits$9.99
- Dreamy Synths$9.99
- Organ & Clav Collection$19.99
- TRITON Best Selection$19.99
- 80's Electric Piano$19.99
- Orchestral Dreams$19.99
- Classic EP-88M$19.99
- Ivory Mobile Grand$29.99
- Module Performance Expansion$29.99
- Ivory Mobile American D$29.99









