KORG Module vs Williams Piano
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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/ !
Williams Piano
Enhance your digital piano experience by shaping its sound with customizable effects like reverb and chorus. Split and layer the keyboard for richer arrangements, and access easy tuning and transposition. Practice with built-in drum and metronome patterns.
- Sound customization (reverb, chorus, tremolo)
- Split and layer keyboard functions
- Easy tuning and transposition
- Drum and metronome patterns
- Unlock full piano features
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Get more from your Williams piano or keyboard with the free Williams Piano app. Easily access and customize sounds, effects and features from your compatible Williams instrument. Adjust reverb, chorus and other effects, split or layer sounds, and quickly access tuning and transposition controls through an intuitive interface. The Williams Piano app also includes drum and metronome patterns for practice, playing and songwriting, making it easy to explore new ideas and keep the music going. Compatible with select Williams digital pianos and portable keyboards, including the Overture IV, Aeris 61, Aeris 73, Legato III, Legato IV, Legato LE, Allegro III, Allegro IV, Overture III, Rhapsody III, Symphony Concert and Symphony Grand II. More control. More ways to play. All from your Williams instrument.
Screenshots
Verdict
The clearest difference is rating: KORG Module at 4.6 against Williams Piano's 1.9. KORG Module also leads on review sentiment (52% vs 18%) and update cadence (monthly vs every 3 months). Williams Piano's advantage is in-app purchases (none vs 21). On price, ads, device support and iOS requirement 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
Both are free to download. KORG Module sells 21 one-off in-app purchases. Williams Piano asks for nothing beyond the download.
KORG Module holds the better App Store score, 4.6 against 1.9. That said, the two scores are not equally well evidenced: KORG Module has 783 ratings behind it against 75, so its average is the more settled of the two. Written reviews point the same way: 52% of KORG Module's written reviews are positive against 18% of Williams Piano's.
KORG Module ships an update monthly, Williams Piano every 3 months. The most recent releases landed on October 17, 2026 and October 16, 2026 respectively.
| Parameter | KORG Module | Williams Piano |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (783 ratings) — better | 1.9 (75 ratings) |
| Positive reviews | 51.7% of reviews — better | 17.6% of reviews |
| Number of ratings | 783 — better | 75 |
| Update frequency | Monthly — better | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.6 |
| Further details — not scored | ||
| Size | 1.7 GB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | KORG INC. | Guitar Center, Inc. |
Customer experience
KORG Module
Williams Piano
Bugs and 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
Williams Piano
Not enough reviews yet to summarise bugs or requests.
In-app purchases
KORG Module
- 7-day trial:TRITON Best selectFree
- 7-day trial : Organ & ClavFree
- 7-day trial : Module Perf ExpFree
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- 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$9.99
- Essential Complete$19.99
- Module Performance Expansion$29.99
Williams Piano
No in-app purchases
Questions
Is KORG Module free?
Is Williams Piano free?
Which has better reviews, KORG Module or Williams Piano?
Do KORG Module or Williams Piano have ads?
Which is updated more often, KORG Module or Williams Piano?
Other comparisons
