# OP vs Drambo

The clearest difference is price: OP at Free against Drambo's $24.99. OP also leads on in-app purchases (none vs 5) and iOS requirement (12.0 vs 15.6). Drambo's advantage is rating (4.8 vs 4.2) and review sentiment (87% vs 47%). On ratings volume, update cadence, ads and device support there is nothing between them.

OP is free to download; Drambo costs $24.99 up front. Drambo sells 5 one-off in-app purchases. OP asks for nothing beyond the download.

Drambo holds the better App Store score, 4.8 against 4.2. Both are backed by a comparable volume of ratings — 116 and 331 respectively. Written reviews point the same way: 47% of OP's written reviews are positive against 87% of Drambo's.

OP ships an update every 6 weeks, Drambo every 5 weeks. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | OP | Drambo |
| --- | --- | --- |
| Price | **Free** | $24.99 |
| Rating | [4.2 (116 ratings)](https://appshunter.io/ios/app/op-z/id1088232296/reviews) | **[4.8 (331 ratings)](https://appshunter.io/ios/app/drambo/id1469365718/reviews)** |
| Number of ratings | 116 | **331** |
| Positive reviews | 47.2% of reviews | **86.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 5 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | — | **#197** |
| Size | 127 MB | 149 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Teenage Engineering](https://appshunter.io/developer/582616768) | [BeepStreet](https://appshunter.io/developer/321412321) |

## What reviewers say

### 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


### Drambo

[App page](https://appshunter.io/ios/app/drambo/id1469365718)

**Currently charting:** #197 Top Paid · Music (US App Store)

This app offers a flexible sound design experience, allowing users to build beats, create synthesizers, and process audio with effects. Its innovative modular system simplifies connections and organization, making it suitable for both beginners and experienced musicians. It functions as a standalone application or a plugin within a DAW.

**Highlights:** Modular sound design, Intuitive cable-less connections, Advanced sequencer, Standalone and AUv3 plugin, Over 140 modules, Polyphonic stereo processing

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Granular extension | $4.99 | one-time |
| Waves extension | $4.99 | one-time |
| Formants extension | $4.99 | one-time |
| DSP extensions 1 | $4.99 | one-time |
| Visual extension | $14.99 | one-time |

**What reviewers like**

- 🚀 Incredibly powerful and flexible
- 🎨 Endless creative possibilities
- 👍 Intuitive and well-designed interface
- 🔧 Modular synth capabilities
- 🎛️ Excellent sequencing and groove box features

**What reviewers complain about**

- 🐛 Occasional crashes and stability issues
- 🔒 Limited undo/redo functionality
- 🔊 Audio export issues (pitch/tempo problems)
- 🔀 Lack of dedicated audio track support

**Reported bugs**

- Audio cutting out after 5 minutes of use
- Presets and patches not loading properly
- Incompatibility with certain iOS devices

**Requested features**

- Stem/track export functionality
- MIDI CC learn and external control
- Ableton Link support
- More parameter control and modulation options
- Improved piano roll and sequencing tools


## Frequently asked questions

### Is OP free?

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

### Is Drambo free?

Drambo costs $24.99, and also offers in-app purchases.

### Which has better reviews, OP or Drambo?

Drambo is rated higher. OP averages 4.2 out of 5 from 116 ratings, while Drambo averages 4.8 from 331 ratings.

### Do OP or Drambo have ads?

Neither OP nor Drambo shows ads.

### Which is updated more often, OP or Drambo?

OP ships an update every 6 weeks, and Drambo every 5 weeks. Most recently, OP was updated on October 24, 2026 and Drambo on October 30, 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.*