# iGrand Piano CS vs KORG Module

The clearest difference is rating: KORG Module at 4.6 against iGrand Piano CS's 3.9. KORG Module also leads on update cadence (monthly vs every 5 months) and ratings volume (772 vs 26). iGrand Piano CS's advantage is iOS requirement (11.0 vs 15.6). On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. iGrand Piano CS sells 3 one-off in-app purchases and KORG Module sells 21 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

KORG Module holds the better App Store score, 4.6 against 3.9. That said, the two scores are not equally well evidenced: KORG Module has 772 ratings behind it against 26, so its average is the more settled of the two. Written reviews point the same way: 49% of iGrand Piano CS's written reviews are positive against 52% of KORG Module's.

iGrand Piano CS ships an update every 5 months, KORG Module monthly. The most recent releases landed on September 22, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | iGrand Piano CS | KORG Module |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (26 ratings)](https://appshunter.io/ios/app/igrand-piano-cs/id570661170/reviews) | **[4.6 (772 ratings)](https://appshunter.io/ios/app/korg-module/id1048875111/reviews)** |
| Number of ratings | 26 | **772** |
| Positive reviews | 49.4% of reviews | **51.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Monthly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 588 MB | 1.7 GB |
| Requires iOS | **11.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [IK Multimedia US, LLC](https://appshunter.io/developer/323694278) | [KORG INC.](https://appshunter.io/developer/363714046) |

## What reviewers say

### iGrand Piano CS

[App page](https://appshunter.io/ios/app/igrand-piano-cs/id570661170)

Experience concert-quality acoustic pianos with ultra-realistic sound and built-in recording. Edit and save custom variations, connect external keyboards, and compose or perform anywhere. Expand your library with additional instrument packs.

**Highlights:** Ultra-realistic acoustic pianos, Built-in recording (MIDI & Audio), Instrument editor with EQ and variations, External keyboard support (iRig), MIDI overdubbing and punch-in, Audiobus and Inter-App Audio support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Piano Expansion | $14.99 | one-time |
| Piano Expansion Pack 2 | $14.99 | one-time |
| Upgrade to Full | $19.99 | one-time |


### KORG Module

[App page](https://appshunter.io/ios/app/korg-module/id1048875111)

This app offers professional piano and keyboard sounds for mobile devices. The free version provides access to high-quality piano sounds, with options to unlock more sound libraries and features through in-app purchases or by connecting Korg MIDI controllers.

**Highlights:** High-quality piano and keyboard sounds, Customizable sound sets with over 30 libraries, AUv3 support, Ultra-low latency sound engine, Unlock sounds with Korg MIDI controllers

**Features:** Family Sharing

**In-app purchases (21)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 7-day trial:TRITON Best select | Free | one-time |
| 7-day trial : Organ & Clav | Free | one-time |
| 7-day trial : Module Perf Exp | Free | one-time |
| 7-day trial : Ivory Grand | Free | one-time |
| 7-day trial : Ivory American D | Free | one-time |
| 7-day trial:Essential Complete | Free | one-time |
| 7-day trial Hybrid 2 | Free | one-time |
| 7-day trial : 80s Dance Pop | Free | one-time |
| 7-day Trial : GENERAL 128 | Free | one-time |
| 7-day trial : OASYS Piano | Free | one-time |
| 7-day Trial: M1 Best Selection | Free | one-time |
| 7-day Trial : Wild Kits | Free | one-time |
| 7-day Trial : Neo Soul | Free | one-time |
| 7-day trial : 80's E.Piano | Free | one-time |
| 7-day Trial : Classic EP-88M | Free | one-time |
| 7-day trial : Dreamy Synths | Free | one-time |
| Hybrid Synth Pack 2 | $4.99 | one-time |
| Space Western | $6.99 | one-time |
| TRITON Best Selection | $19.99 | one-time |
| Module Performance Expansion | $29.99 | one-time |
| Essential Complete | $39.99 | one-time |

**What reviewers like**

- 🎹 Great sounds and interface
- 🎨 Realistic piano and organ sounds
- 💻 Works well as an AUv3 plugin
- 🔍 Helpful as a teaching tool
- 🎚️ Excellent sound quality and options

**What reviewers complain about**

- 🔁 Frequent need to restore purchases
- ⚠️ Compatibility issues with Korg hardware
- 🔒 Confusing purchase options and restrictions
- 🔋 Causes device heating issues
- 🔇 Low volume compared to other apps

**Reported bugs**

- Purchased sounds disappearing after updates
- Inability to delete individual modules to save space
- Inconsistent behavior with Bluetooth MIDI controllers
- Crashes when using certain expansion packs

**Requested features**

- Add virtual pitch bend and modulation wheels
- Improve Gadget integration and availability of IAPs
- Implement AUv3 support for better integration
- Provide a more intuitive and streamlined interface
- Add more instrument categories like brass, woodwinds, and Latin percussion


## Frequently asked questions

### Is iGrand Piano CS free?

iGrand Piano CS is free to download, with in-app purchases available.

### Is KORG Module free?

KORG Module is free to download, with in-app purchases available.

### Which has better reviews, iGrand Piano CS or KORG Module?

KORG Module is rated higher. iGrand Piano CS averages 3.9 out of 5 from 26 ratings, while KORG Module averages 4.6 from 772 ratings.

### Do iGrand Piano CS or KORG Module have ads?

Neither iGrand Piano CS nor KORG Module shows ads.

### Which is updated more often, iGrand Piano CS or KORG Module?

iGrand Piano CS ships an update every 5 months, and KORG Module monthly. Most recently, iGrand Piano CS was updated on September 22, 2026 and KORG Module on September 23, 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.*