KORG iMS-20 4+

Legendary Synthesizer


    • 4.6 • 190 Ratings
    • $29.99

iPad Screenshots


iMS-20 is an analog synth studio; a complete recreation of the Korg MS-20 synth, an analog sequencer, a drum machine, and even Korg's Kaoss Pad technology. Plus, you can share your songs online via the SoundCloud!

iMS-20 is a complete music production app for iPad. It consists of a complete recreation of the legendary Korg MS-20 analog synth with the patching capability, plus a 16-step analog sequencer based on the Korg SQ-10, a six-part drum machine which can create drum parts by simply tapping the buttons, and a seven-channel mixer with 14 types of effects.

In addition, iMS-20 offers dual Kaoss Pads allowing you to generate music by simply stroking the pad and moving your fingers over it. Experiment to come up with wild musical phrase! And with access to the SoundCloud audio platform*, you can publish your songs, or collaborate on ideas with people anywhere in the world from within the app!

• MS-20 monophonic synthesizer : 1 unit
• Analog sequencer : 1 unit
• 6-part drum machine : 1 unit
• Mixer : 1 unit
• Song/Pattern composer : 1 unit

MS-20 monophonic synthesizer:
• Analog modeling synthesizer (MS-20 modeled by “CMT” Component Modeling Technology)
• 2VCO / 2VCF / 1VCA / 2EG / Patch Panel
• Additional functions : Modulation Key/Tempo Sync
• Insert effect (selectable from 14 effect types as below)

Analog sequencer:
• 16-step analog sequencer
• Control notes, volume, pan, parameters, and voltages via knobs
• Configurable steps (1-16) and sequence mode (6 types)
• Trigger out per channel or step position

6-part drum machine:
• 6-part/16-step drum machine
• Create sounds by sampling a single note from a built-in MS-20
• Controllable notes, volume and pan by knobs
• Configurable steps (1-16) and sequence mode (6 types) per a part

• 7-channel mixer
• Double needle meter indicates VU level
• Master effect (selectable from 14 effect types as below)

Song/Pattern composer:
• Compose a song or select a pattern, built-in mixer
• 16 patterns and 256 bars per a song
• Tempo setting (20-300 BPM) and Swing function

Effect type:
• 14 types : Short Delay, BPM Sync Delay, Reverb 1, Reverb 2, Chorus/Flanger, Equalizer, Compressor, Tube Simulator (Valve Force), Low-Pass Filter, High-Pass Filter, Band-Pass Filter, Talking Modulator, Decimator, Grain Shifter

• Keyboard : Variable width (22, 26, or 29 keys)
• Kaoss Pad : 2 units
- Performance pad : Key/Scale (31 types) settings
- Parameter control pad : X-Y axis parameter settings

• Audio export function (Bouncing a song or pattern, and Real-time recording a performance: 16-bit/44.1 kHz stereo WAV format)
• Publish and share songs online with the SoundCloud audio platform
• Various template patterns by music genre are included
• Various template sounds by sound category are included

* You will need to register for a SoundCloud account in order to use SoundCloud. Also, when using SoundCloud, you must observe SoundCloud Ltd.'s terms of use, such as the prohibition on uploading songs whose copyright is the property of a third party. For details, refer to the SoundCloud website : http://soundcloud.com

Follow us on:
● Facebook : http://www.facebook.com/korg.iapps
● Twitter : http://www.twitter.com/korg_iapps

What’s New

Version 1.7.6

Improved app stability.

Ratings and Reviews

4.6 out of 5
190 Ratings

190 Ratings

BWallHair ,

New Favorite Instrument!

I use the iMS-20 on my iPad 2. I have several other synth apps, but none I have found offer such a vast combination of sound generation possibilities. This app does it all, if you take the time to learn about this program. The info in the manual is great for beginners, too.
With enough knowledge, one can emulate virtually any musical instrument and produce an entire composition from rhythm to lead.
This app offers so much for so little, compared to prices of physical synth machines. You can even utilize dual kaossilator pads or a virtual keyboard for live performing or recording.
If you make music or are interested in learning how to create electronic beats, this app is a must have. As a newcomer to synthesis, the challenge of understanding, alone, is enough to occupy my focus for hours.
My favorite aspect to using this app, are the results I see while merely using the app. Becoming familiar with the array of variations and manipulations available will perhaps keep me entertained and learning for years to come!

Ggnomind ,

I was afraid of this!

Stop reading and buy this synth now! Simply amazing. 90 seconds into playing around with the synth blew me away, the sound, the layout, the functionality of everything is right at your fingertips. It draws you in and makes you want to explore. The synth is an indispensable tool in the hands of any real synthesist.

Developer Response ,

Hello, thank you for your message.
We appreciate the heartwarming review and hope the iMS-20 can always bring inspiration to your synthesist journey.
Best regards,
KORG App Team

Stevo3985 ,

Korg always leaves me hanging…

Just got this and, I don’t know why I am surprised, but here I am, and this is another great example of a half baked product that the company obviously doesn’t care about maintaining. The interface is not clear and/or easy to figure out, the whole thing is rendering with obvious unintended overlap on the screen of my 2021 iPad Pro 11”, and the user manual does not even appear, when I select it in the menu. This really should be made illegal; if they don’t intend to keep supporting software in the future, a developer should be prevented from being able to sell it, unless there is a given and acknowledged disclaimer that the software will not be touched for maintenance updates. I’m giving it 2 stars because it sounds like it should, but missing 3 stars because the standalone version of the app no longer is functional as a compositional tool, because of obvious neglect by the devs at Korg. I feel VERY disappointed that I threw away $30 on this app. Thanks for nothing, Korg. 👎🏼👎🏼

App Privacy

The developer, KORG INC., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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