# KORG Gadget 3 vs OP

The clearest difference is price: OP at Free against KORG Gadget 3's $39.99. OP also leads on in-app purchases (none vs 11). KORG Gadget 3's advantage is rating (4.8 vs 4.2) and review sentiment (76% vs 47%). On update cadence, ads, device support and iOS requirement there is nothing between them.

OP is free to download; KORG Gadget 3 costs $39.99 up front. KORG Gadget 3 sells 11 one-off in-app purchases. OP asks for nothing beyond the download.

KORG Gadget 3 holds the better App Store score, 4.8 against 4.2. That said, the two scores are not equally well evidenced: KORG Gadget 3 has 2.9K ratings behind it against 116, so its average is the more settled of the two. Written reviews point the same way: 76% of KORG Gadget 3's written reviews are positive against 47% of OP's.

KORG Gadget 3 ships an update monthly, OP every 6 weeks. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | KORG Gadget 3 | OP |
| --- | --- | --- |
| Price | $39.99 | **Free** |
| Rating | **[4.8 (2.9K ratings)](https://appshunter.io/ios/app/korg-gadget-3/id791077159/reviews)** | [4.2 (116 ratings)](https://appshunter.io/ios/app/op-z/id1088232296/reviews) |
| Number of ratings | **2.9K** | 116 |
| Positive reviews | **75.8% of reviews** | 47.2% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#90** | — |
| Size | 1.9 GB | 127 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KORG INC.](https://appshunter.io/developer/363714046) | [Teenage Engineering](https://appshunter.io/developer/582616768) |

## What reviewers say

### KORG Gadget 3

[App page](https://appshunter.io/ios/app/korg-gadget-3/id791077159)

**Currently charting:** #90 Top Paid · Music (US App Store)

Create music with a comprehensive suite of over 40 virtual instruments and effects. This powerful yet intuitive ecosystem allows you to quickly turn your musical ideas into finished tracks, offering a vast sound library and flexible workflow for various genres.

**Highlights:** Over 40 virtual instruments and drum machines, New Santa Ana (Guitar) and Sydney (Sampler) gadgets, 5 new insert effects (IFX), Intuitive user interface and workflow, Genre select system for songwriting, AUv3 support for iOS integration, Extensive sound library with 6,000+ programs

**Features:** Family Sharing

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bilbao | $9.99 | one-time |
| Abu Dhabi | $9.99 | one-time |
| Madrid | $14.99 | one-time |
| Gladstone | $14.99 | one-time |
| Kamata | $14.99 | one-time |
| Lisbon | $14.99 | one-time |
| Vancouver | $14.99 | one-time |
| Stockholm | $14.99 | one-time |
| Otorii | $14.99 | one-time |
| Santa Ana | $14.99 | one-time |
| Ebina | $14.99 | one-time |

**What reviewers like**

- 🚀 Great for creating rave and dance music
- 👍 Intuitive and easy to use
- 🎨 Powerful sound design capabilities
- 💡 Useful for live performance
- 👍 Excellent workflow for sketching ideas

**What reviewers complain about**

- 🐛 Crashes and stability issues
- 💰 Expensive with many in-app purchases
- 🔀 Randomized saved project order
- 🔍 Difficult to precisely control zoom and note editing
- 🔓 Issues with restoring purchased content

**Reported bugs**

- Playback issues with latest update
- Imported samples limited to 5 seconds
- Bilbao sampler crashes when importing WAV files
- Gadget instruments not showing up in AUv3 lists

**Requested features**

- Add more acoustic drum and bass sounds
- Implement MIDI out functionality
- Allow customizable scales and tunings
- Add a proper sampler with more advanced features
- Improve copy/paste and track management capabilities


### OP

[App page](https://appshunter.io/ios/app/op-z/id1088232296)

This app provides a wireless screen for the OP-Z synthesizer, displaying real-time musical data like mixer levels and effect amounts. It enhances interaction with multi-touch controls for simultaneous adjustments and a smooth touchpad for effects.

**Highlights:** Wireless screen for OP-Z, Real-time data visualization, Mixer level monitoring, Effect level monitoring, Multi-touch mixer control, Touchpad for effects/filters

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Well-designed software
- 💡 Visual elements are great
- 👍 Easy to use companion app
- 🚀 Fast Bluetooth connection (sometimes)
- 👍 Informative and clear layout

**What reviewers complain about**

- 🐛 Frequent connection issues
- 🐛 App crashes often
- 🐛 Incompatible with older iOS
- 🐛 Hardware manufacturing defects
- 🐛 Unreliable Bluetooth connectivity

**Reported bugs**

- Manufacturing defects
- App crashes when using videoout feature
- App crashes or hangs with HDMI output
- Unable to connect through Bluetooth or adapter
- App no longer connects after getting a new iPad

**Requested features**

- Make compatible for older iOS
- Offline guide available
- Add clear dial metrics
- Import sound plugs via app
- Add own Unity graphics


## Frequently asked questions

### Is KORG Gadget 3 free?

KORG Gadget 3 costs $39.99, and also offers in-app purchases.

### Is OP free?

OP is free to download, with no in-app purchases.

### Which has better reviews, KORG Gadget 3 or OP?

KORG Gadget 3 is rated higher. KORG Gadget 3 averages 4.8 out of 5 from 2.9K ratings, while OP averages 4.2 from 116 ratings.

### Do KORG Gadget 3 or OP have ads?

Neither KORG Gadget 3 nor OP shows ads.

### Which is updated more often, KORG Gadget 3 or OP?

KORG Gadget 3 ships an update monthly, and OP every 6 weeks. Most recently, KORG Gadget 3 was updated on October 30, 2026 and OP on October 24, 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.*