# KORG iMono/Poly — Synthesizer / Keyboard

> Classic 4VCO analog synthesizer reborn for iOS with advanced sound design features. (iPhone/iPad app by KORG INC..)

- Source: https://appshunter.io/ios/app/korg-imonopoly/id1256218493 (this page in markdown: same URL + `.md`)
- Developer: [KORG INC.](https://appshunter.io/developer/363714046)
- Category: Music, Entertainment
- Price: $29.99 with in-app purchases
- Rating: 4.30/5 from 84 App Store ratings · 129 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.3 · 203 MB
- Languages: American English, Japanese
- Released: 2017-08-22
- Data updated: 2026-08-26
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/korg-imonopoly/id1256218493/reviews.md

## What is KORG iMono/Poly?

Reviving a classic KORG analog synthesizer.
The iconic 4VCO synthesizer, reborn on iOS.

The Mono/Poly analog synthesizer appeared in 1981 at the same time as the acclaimed Polysix. Not only was it a fat-sounding four-VCO monophonic synthesizer, it featured a revolutionary design that allowed it to also be used as a four-voice polyphonic synthesizer, which helped cement its legendary status.

The long-awaited “KORG iMono/Poly” iPad/iPhone app completely reproduces all features of the original Mono/Poly. Four VCOs and a rich array of modulation allow a wide range of detailed sound design. New functionality such as two multi-effects units and eight virtual patches are also provided. In addition, the seamless integration that you expect from KORG’s iOS apps will fit perfectly into your music making process. The Mono/Poly has been reborn for today’s world, bringing you a unique and legendary sound.

* Due to differences in CPU speed of iPads / iPhones, iPad 3rd gen/2/iPad mini/iPhone 4s are not supported, only iPad Air/iPhone 5s or later is recommended.

[ Features ]

• Deep 4VCO sound. A complete reproduction of the classic Mono/Poly
The Mono/Poly synthesizer featured four VCOs, a dedicated envelope generator for the VCF, and also sync and cross-modulation, earning it a reputation for its detailed sound-shaping potential and its distinctive character.

• Powerful virtual patches, and the latest presets to catch the scene
Eight virtual patches provide the ultimate expansion of the Mono/Poly’s distinctive sound-design potential. Two multi-effect units are also provided, allowing you to create complex and broad-ranging sounds with complete freedom.

• Quick access to all panels
Although iMono/Poly provides a vast number of parameters, it’s designed with a screen structure that provides quick and seamless access to all of them. With a single tap, you can rotate between the main synth & key assign screen and the virtual patch & effect screen. There’s no need to open individual screens for specific functions, or to move back and forth between them.

• Produce music in conjunction with KORG Gadget
iMono/Poly can be used in conjunction with “KORG Gadget,” the music production DAW app that has won numerous prizes within Japan and around the world. When you install both apps, iMono/Poly appears as the “Montpellier” gadget within KORG Gadget.

More info at korg.com

## Key features

- Faithful reproduction of classic 4VCO analog synthesizer
- Deep sound design with extensive modulation
- Eight virtual patches for expanded sound potential
- Two multi-effect units
- Quick access to all synth parameters
- Integration with KORG Gadget

## Pricing and in-app purchases

Base price: $29.99.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Expansion Factory Pack | $4.99 | one-time |


## What do users think of KORG iMono/Poly?

Overall sentiment: mixed

**Pros**

- 🎶 Great sounding synth
- ✨ Fantastic sound quality
- 🎵 Amazing features and sounds
- 💻 Excellent for Gadget integration
- 💡 Versatile for sound design
- 🌟 Highly recommended synth
- 🎛️ Powerful modulation possibilities
- 💯 Faithful recreation of original

**Cons**

- 🔌 No AUv3 support
- 🚫 Useless without AUv3
- 💸 Waste of money without AUv3
- 📉 Low output volume
- 🤏 Small controls, difficult manipulation
- 😕 Disappointing lack of AUv3
- 👎 Unstable MIDI connection
- 🐌 Slow to update
- 🎨 Dull/ugly interface
- 🚫 Monopoly skin removed
- 📱 Wasted screen space on larger devices
- 🔇 Weak master volume

**Commonly reported bugs**

- Cannot restore expansion pack
- Cannot find store tab
- Scale selection broken
- User scale does nothing
- MIDI unstable
- Audio pops
- Monopoly skin removed
- Does not work with nanokey studio Bluetooth
- IAA Panel not displaying host link, transport, record buttons
- MIDI IAA selection not appearing in Cubasis
- On-screen keyboard plays fixed velocity notes
- Arpeggiator doesn't work as expected in Gadget
- User programmed sounds not visible in Gadget
- Patches sound different in Gadget
- App does not take advantage of larger iPhone XS Max screen size

**Most requested features**

- AUv3 support
- Adaptive Cubasis 3 AUv3
- More iMPC integration
- Transfer patches to desktop VST
- Store preset files on device/flash drive
- Keyboard portamento to filter cutoff
- Double tap knob to zero/fine adjust
- Save mod wheel position in preset
- Scroll and lock keyboard to key
- Octave switches on left with large keyboard
- Key transpose for arpeggiator
- Undo/redo feature
- Portamento on/off button
- Arpeggio rate as mod destination
- Full-sized keyboard button
- Turn into AUv3
- Bring back Monopoly skin
- Add high-pass filter (HPF)
- MIDI sync in
- Export/share sounds
- Assign right Kaoss pad like left
- AUv3 version
- Latch button for ARP patches
- Random feature
- Double tap to return dials to 0
- Right XY pad assignable
- More extensive external MIDI controller support
- MPE support
- More expansion packs
- Access user patches within Gadget's Montpellier
- Mod destination for VCO Mod Type
- MIDI learn for all controls
- Link on standalone
- Improve effects quality
- Add Korg Prophecy
- Add Trinity, Triton
- Improve IAA panel functionality
- MIDI IAA selection from host
- Fixed velocity on-screen keyboard improvement
- Tempo synchronization with other apps (IAA, MIDI clock, Ableton Link)
- Improve UI for larger screens
- Immaculate skin option

## Recent user reviews (10 of 129)

All indexed reviews: https://appshunter.io/ios/app/korg-imonopoly/id1256218493/reviews.md

### 1/5 — 4年アップデートなし

*2026-07-26*

他の使うからいいや

### 3/5 — No AUv3

*2026-06-25, version 1.2.6*

This synth is great, but no support AUv3. Will be support AUv3 in next update ?

### 5/5 — Cool!

*2026-06-05, version 1.2.6*

Cool!! Plz Adaptive Cubasis 3 auv3. Auv3 plz!!!

### 5/5 — Cool!

*2026-04-13, version 1.2.6*

Cool!! Plz Adaptive Cubasis 3 auv3.

### 2/5 — AUv3 . . . tap tap tap, Hello?

*2026-04-08, version 1.2.6*

When is AUv3 being implemented in this and your other apps?

### 2/5 — AUv3

*2026-03-29*

So eine App ohne AUv3 macht nur bedingt Sinn.

### 3/5 — 惜しい

*2025-12-01*

コルグガジェットで使って欲しいのは分かるが、AUv3にも対応して欲しい。

### 5/5 — Beautiful

*2025-11-19*

Great app I have them all now wish more showed up in iMPC that would really put y’all on top! Tyty

### 4/5 — AUv3 プラグイン対応を希望します。

*2025-10-20*

2025/10/20時点では、AUv3 プラグインとしては、残念ながら使えません。
また、KORG Gadget で、Montpellier としてアンロックされますが、Montpellier は、AUM など他のDAW等でAUv3 として、読み込めません(一覧に表示されない)。
AUv3 対応されることを希望します。
iM1 は発売から9年ほどたって突然 AUv3 対応になったので、iMono/Polyも期待して待ってます。

**Developer response:** レビューありがとうございます。

現在、順次AUv3対応を進めておりますので、
ご要望にお応えできるよう今後も努めてまいります。

引き続きご愛顧のほどよろしくお願いいたします。

コルグアプリチーム

### 4/5 — Mrs de Korg: vous êtes bornés ou quoi!

*2025-08-18*

À quoi ça sert de nous mettre sous le nez des versions iOS sincèrement excellentes de vos superbes créations en vous obnubilant à ne pas vous adaptez à la manière dont 99% des « iMusiciens » travaillent: c’ est-à-dire avec les technologies AUv3 et/ou inter-app !!!
 Surtout qu’ en plus vous avez abandonnés la fonction WIST! 

Du coup, à part servir de versions diminuées et simplifiées dans Gadget, vos Polysix, Mono/Poly, iElectribe, iM1, iMS20, ,iDS-10, Odissei...etc sont condamnés à n’ être utilisés que chacun TOUT SEUL dans son coin. 

Comment je fais si je veux synchroniser ma boîte à rythme préférée avec iMono/Poly? Je ne peux même pas utiliser iElectribe! Un comble..

C’EST DU GRAND N’IMPORTE QUOI!

Svp, je vous le demande à genoux: implantez au moins la fonction AU (Audio Unit) dans vos applis.
Sinon iKorg c’ est fini pour moi.

**Developer response:** Hello.
Thank you for your review.
We are so sorry that we haven't released AUv3 capabilities for this app yet.
We have plans to implement it in a near future, and we hope on that day we can receive a newer and happier review from you.

Best regards,

KORG App Team

## Frequently asked questions about KORG iMono/Poly

### What is KORG iMono/Poly?

KORG iMono/Poly is an iOS application that faithfully reproduces the legendary KORG Mono/Poly analog synthesizer. It brings the iconic 4VCO sound engine and its extensive sound-shaping capabilities to your iPad or iPhone, allowing for deep sound design and creative musical exploration.

### What are the key features of KORG iMono/Poly?

Key features include a faithful reproduction of the classic 4VCO sound engine, offering deep sound design potential with extensive modulation options. It also provides eight virtual patches for expanded sound possibilities, two multi-effect units, and quick access to all synth parameters for a seamless user experience. The app can also be integrated with KORG Gadget.

### Is KORG iMono/Poly free to use?

The application itself is free to download and use, offering the core functionality of the classic synthesizer. However, it does feature in-app purchases, which may unlock additional features, presets, or functionalities for users who wish to expand their experience further.

### What devices are compatible with KORG iMono/Poly?

Due to CPU speed differences, older devices like iPad 3rd gen/2/iPad mini/iPhone 4s are not supported. It is recommended to use iPad Air/iPhone 5s or later for optimal performance and compatibility with the application.

### How can I use KORG iMono/Poly in my music production?

This app is ideal for creating unique and legendary synth sounds for your music. You can use its deep sound design capabilities to craft custom patches, apply multi-effects, and then integrate these sounds into your projects. It also seamlessly integrates with KORG Gadget, appearing as the 'Montpellier' gadget within that DAW app.

## Version history (last 5 releases)

### 1.2.6 — 2021-10-03

Improved iOS 15 support

### 1.2.5 — 2020-09-25

- When you export your sound preset to Gadget, the app crashes. This has been fixed.

### 1.2.4 — 2020-01-31

We saw many comments expressing disappointment that the random feature was removed, so we brought it back :)

### 1.2.3 — 2019-12-23

iMonoPoly special skin promotion period ended.

### 1.2.2 — 2019-09-25

• Now supports iOS13.
• Other improvements and bug-fixes.

## Apps similar to KORG iMono/Poly

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [FabFilter Twin 3](https://appshunter.io/ios/app/fabfilter-twin-3/id1671810470) | 4.6 (42) | $24.99 | Music |
| [Addictive Pro](https://appshunter.io/ios/app/addictive-pro/id1130398188) | 4.7 (18) | $5.99 | Music |
| [iMPC Pro 2](https://appshunter.io/ios/app/impc-pro-2/id1294928298) | 4.4 (1,058) | $24.99 | Music |
| [iMPC Pro 2 for iPhone](https://appshunter.io/ios/app/impc-pro-2-for-iphone/id1413887036) | 4.6 (1,814) | $12.99 | Music |
| [SampleTank](https://appshunter.io/ios/app/sampletank/id464783893) | 2.7 (107) | $24.99 | Music |
| [Synclavier Go! App and Plugin](https://appshunter.io/ios/app/synclavier-go-app-and-plugin/id1378108734) | 4.7 (52) | $19.99 | Music |

## More apps by KORG INC.

- [KORG iELECTRIBE for iPad](https://appshunter.io/ios/app/korg-ielectribe-for-ipad/id363714043)
- [KORG iMS-20](https://appshunter.io/ios/app/korg-ims-20/id401142966)
- [iELECTRIBE Gorillaz Edition](https://appshunter.io/ios/app/ielectribe-gorillaz-edition/id430288460)
- [SyncKontrol](https://appshunter.io/ios/app/synckontrol/id438617344)
- [KORG iKaossilator](https://appshunter.io/ios/app/korg-ikaossilator/id452559831)
- [KORG iPolysix for iPad](https://appshunter.io/ios/app/korg-ipolysix-for-ipad/id579232173)

All apps by KORG INC.: https://appshunter.io/developer/363714046

## Related topics

[korg ielectribe](https://appshunter.io/ios/topics/korg-ielectribe) · [korg ipolysix](https://appshunter.io/ios/topics/korg-ipolysix) · [korg gadget 3](https://appshunter.io/ios/topics/korg-gadget-3) · [korg 24](https://appshunter.io/ios/topics/korg-24) · [low poly synth](https://appshunter.io/ios/topics/low-poly-synth) · [korg ims](https://appshunter.io/ios/topics/korg-ims) · [korg module](https://appshunter.io/ios/topics/korg-module)

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*