Comparison

iGrand Piano CS vs KORG Module

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

iGrand Piano CS

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
Read full description

THE CONCERT QUALITY PIANO APP UPDATED FOR AUDIOBUS AND INTER-APP AUDIO WITH NEW EXPANSION PACK, EQ AND USER VARIATIONS The ultimate piano instrument provides you with an extraordinary collection of ultra-realistic acoustic pianos along with built-in recording! Use the iRig KEYS and KEYS PRO portable keyboards (www.irigkeys.com) or the iRig MIDI 2 interface (www.irigmidi.com) to connect your external keyboard, and you're ready to compose, rehearse, perform and record with the very best instruments for your mobile world. You can now edit your sound even further with the new 3-band EQ and save up to 4 user variations per instrument. iGrand Piano puts the world's finest pianos right at your fingertips with studio-grade quality that stands up to the most powerful virtual instruments available on a computer. With high-definition stereo samples across multiple velocities, iGrand Piano brings you the most playable, expressive and beautiful sounding piano instruments available on a mobile device that you can play anytime and everywhere. iGrand Piano FREE gives you 2 world-class pianos (including one by registering) along with a capable recorder and metronome. The instruments in the FREE version are limited to the 4 octaves centered on middle C (C1 to C5). Purchase the “Upgrade to Full Version” option to get the full 88-note range and give your FREE app the same additional 6 instruments as the paid version. Add the Piano Expansion 1 via in-app purchase to extend your piano library with 9 additional high-quality instruments or the Piano Expansion 2 with 22 all-new instruments including the Hollywood Piano, piano + strings layers and harpsichords. Record your rehearsals or performances as MIDI with both overdubbing and punch-in capability, then export your track as audio via E-mail or File Sharing or Audio Copy to other iOS apps. With the built-in MIDI Recorder, you can change the tempo of your piece or even choose to use a different piano AFTER you've completed your performance! For composers of any level, the MIDI Recorder lets you capture and develop ideas anywhere your mobile life takes you. iGrand Piano also includes some professional MIDI performances to help you audition the various piano instruments or just inspire your own creative muse! The easy-to-use instrument editor puts real-time controls on the panel just above the keys to let you adjust the amount of ambience, the position of the lid (open, closed or anything in between), brightness, envelope release, key transposition and tuning. All edit knobs can be assigned to your choice of MIDI controllers for external fine-crafting of your instrument's sonic details. Virtual MIDI and MIDI Program Change are also supported along with Audiobus and Inter-App Audio for iOS 8. iGrand Piano features: - World-class, multi-velocity stereo grand and upright piano instruments (upright available by registering) - “Upgrade to Full Version” with 6 more pianos and full 88-note range instantly available via in-app purchase - Expandable libraries offer 31 additional instruments instantly available via in-app purchase - Intuitive instrument edit controls including ambience, lid, brightness, release, tuning and transpose - Included MIDI Recorder with overdub and punch-in capability - Export performances via E-mail, File Sharing and Audio Copy - Large visual metronome with variable click volume and adjustable tempo - Easy-to-use instrument editor with transpose to adjust ambience, tonality and tuning with 4 user variations per instrument - Audiobus and Inter-App Audio support for iOS 8 - Virtual MIDI and MIDI Program Change support - Low-latency for real-time playing - More than 64-voice polyphony on the latest devices - Designed in concert with iRig KEYS and iRig KEYS PRO portable MIDI keyboards and iRig MIDI 2 interface - Full version also available For more information: www.ikmultimedia.com/igrand www.irigkeys.com www.irigmidi.com

About

KORG Module

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
Read full description

The best sounds, available to everyone. FREE version lets you experience the high-quality piano & keyboard sound. Announcing a new high-quality mobile sound module app for iOS! • KORG Module Pro (Full version): Achieved the #1 position on 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 KORG microKEY, you can play studio-quality keyboard and grand piano sounds anywhere. FEATURE HIGHLIGHTS ● With just an iPad/iPhone and the new microKEY, you can enjoy great sound anywhere ● Stunningly high-quality piano for free. ● Customize your sound set: Available over 30 sound libraries from the Store page. ● AUv3 support ● Ultra-low latency sound engine ● Unlock additional 4 sounds by connecting Korg MIDI controllers/synthesizers. Check the details from www.korg.com/bundle. More info at https://www.korg.com/products/software/korg_module/ !

Screenshots

iGrand Piano CS4 screens
KORG Module4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 6 level
iGrand Piano CS versus KORG Module: the parameters behind the verdict, then further details
ParameteriGrand Piano CSKORG Module
PriceFreeFree
Rating3.9 (26 ratings)4.6 (772 ratings) — better
Positive reviews49.4% of reviews51.7% of reviews — better
Number of ratings26772 — better
Update frequencyEvery 5 monthsMonthly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS11.0 — better15.6
Further details — not scored
Size588 MB1.7 GB
Age rating4+4+
DeveloperIK Multimedia US, LLCKORG INC.

Customer experience

iGrand Piano CS

All ratings26 ratings
Positive69.2%
Neutral11.5%
Negative19.2%
Written reviews89 reviews
Positive49.4%
Neutral16.9%
Negative33.7%

KORG Module

All ratings772 ratings
Positive88.6%
Neutral4.4%
Negative7.0%
Written reviews261 reviews
Positive51.7%
Neutral12.3%
Negative36.0%

Bugs and requests

iGrand Piano CS

Not enough reviews yet to summarise bugs or requests.

KORG Module

Reported bugs

4 issues
  • 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

5 requests
  • 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

In-app purchases

3 purchases

iGrand Piano CS

One-time3
  • Piano Expansion$14.99
  • Piano Expansion Pack 2$14.99
  • Upgrade to Full$19.99
21 purchases

KORG Module

One-time21
  • 7-day trial:TRITON Best selectFree
  • 7-day trial : Organ & ClavFree
  • 7-day trial : Module Perf ExpFree
Show 18 more
  • 7-day trial : Ivory GrandFree
  • 7-day trial : Ivory American DFree
  • 7-day trial:Essential CompleteFree
  • 7-day trial Hybrid 2Free
  • 7-day trial : 80s Dance PopFree
  • 7-day Trial : GENERAL 128Free
  • 7-day trial : OASYS PianoFree
  • 7-day Trial: M1 Best SelectionFree
  • 7-day Trial : Wild KitsFree
  • 7-day Trial : Neo SoulFree
  • 7-day trial : 80's E.PianoFree
  • 7-day Trial : Classic EP-88MFree
  • 7-day trial : Dreamy SynthsFree
  • Hybrid Synth Pack 2$4.99
  • Space Western$6.99
  • TRITON Best Selection$19.99
  • Module Performance Expansion$29.99
  • Essential Complete$39.99

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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