# OP vs NERD Synth A2x + AUv3

The clearest difference is price: OP at Free against NERD Synth A2x + AUv3's $5.99. OP also leads on iOS requirement (12.0 vs 14.4). NERD Synth A2x + AUv3's advantage is rating (4.9 vs 4.2) and review sentiment (89% vs 47%). On ads, in-app purchases and device support there is nothing between them.

OP is free to download; NERD Synth A2x + AUv3 costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

NERD Synth A2x + AUv3 holds the better App Store score, 4.9 against 4.2. That said, the two scores are not equally well evidenced: NERD Synth A2x + AUv3 has 1.4K ratings behind it against 116, so its average is the more settled of the two. Written reviews point the same way: 47% of OP's written reviews are positive against 89% of NERD Synth A2x + AUv3's.

OP ships an update every 6 weeks, NERD Synth A2x + AUv3 fortnightly. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | OP | NERD Synth A2x + AUv3 |
| --- | --- | --- |
| Price | **Free** | $5.99 |
| Rating | [4.2 (116 ratings)](https://appshunter.io/ios/app/op-z/id1088232296/reviews) | **[4.9 (1.4K ratings)](https://appshunter.io/ios/app/nerd-synth-a2x-plus-auv3/id6478898564/reviews)** |
| Number of ratings | 116 | **1.4K** |
| Positive reviews | 47.2% of reviews | **89.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Fortnightly** |
| Monetization | **Free** | Paid |
| Size | 127 MB | 242 MB |
| Requires iOS | **12.0** | 14.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Teenage Engineering](https://appshunter.io/developer/582616768) | [AudioKit Pro](https://appshunter.io/developer/1307785645) |

## 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


### NERD Synth A2x + AUv3

[App page](https://appshunter.io/ios/app/nerd-synth-a2x-plus-auv3/id6478898564)

This virtual analog synthesizer offers a powerful and intuitive sound design experience, inspired by classic hardware. Explore over 40 classic waveforms, a versatile arpeggiator, step sequencer, and lush effects to craft unique electronic music.

**Highlights:** Virtual Analog Synthesizer, 40+ Classic Waveforms, Arpeggiator, Step Sequencer, Lush Effects Suite, Four-voice Unison, AUv3 Plugin Support

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- ⭐ Outstanding synth
- 👍 Very nice and rich sounding
- 🎨 Great presets and sound design
- 🔧 Easy to use and intuitive
- 💻 Works well in AUv3 environments

**What reviewers complain about**

- 🐛 Doesn't show up in Logic
- 🔧 Needs to be more Mac-compatible
- 🔧 Changing presets can be sluggish
- 🔧 Missing aftertouch/expression support

**Reported bugs**

- Doesn't fit properly in Logic Pro for iPad
- Keyboard keys get stuck when using a controller

**Requested features**

- Dark mode option
- Undo/redo functionality
- Improved Logic Pro integration
- Ability to change color scheme


## Frequently asked questions

### Is OP free?

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

### Is NERD Synth A2x + AUv3 free?

NERD Synth A2x + AUv3 costs $5.99, with no in-app purchases.

### Which has better reviews, OP or NERD Synth A2x + AUv3?

NERD Synth A2x + AUv3 is rated higher. OP averages 4.2 out of 5 from 116 ratings, while NERD Synth A2x + AUv3 averages 4.9 from 1.4K ratings.

### Do OP or NERD Synth A2x + AUv3 have ads?

Neither OP nor NERD Synth A2x + AUv3 shows ads.

### Which is updated more often, OP or NERD Synth A2x + AUv3?

OP ships an update every 6 weeks, and NERD Synth A2x + AUv3 fortnightly. Most recently, OP was updated on October 24, 2026 and NERD Synth A2x + AUv3 on October 27, 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.*