# MIDI Designer Pro X vs NERD Synth A2x + AUv3

The clearest difference is price: MIDI Designer Pro X at Free against NERD Synth A2x + AUv3's $5.99. MIDI Designer Pro X also leads on update cadence (every 5 days vs fortnightly). NERD Synth A2x + AUv3's advantage is in-app purchases (none vs 9) and rating (4.9 vs 4.6). On ads and device support there is nothing between them.

MIDI Designer Pro X is free to download; NERD Synth A2x + AUv3 costs $5.99 up front. MIDI Designer Pro X sells 9 in-app purchases, starting at $1.49 per month. NERD Synth A2x + AUv3 asks for nothing beyond the download.

NERD Synth A2x + AUv3 holds the better App Store score, 4.9 against 4.6. That said, the two scores are not equally well evidenced: NERD Synth A2x + AUv3 has 1.4K ratings behind it against 271, so its average is the more settled of the two. Written reviews point the same way: 79% of MIDI Designer Pro X's written reviews are positive against 89% of NERD Synth A2x + AUv3's.

MIDI Designer Pro X ships an update every 5 days, NERD Synth A2x + AUv3 fortnightly. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | MIDI Designer Pro X | NERD Synth A2x + AUv3 |
| --- | --- | --- |
| Price | **Free** | $5.99 |
| Rating | [4.6 (271 ratings)](https://appshunter.io/ios/app/midi-designer-pro-x/id492291712/reviews) | **[4.9 (1.4K ratings)](https://appshunter.io/ios/app/nerd-synth-a2x-plus-auv3/id6478898564/reviews)** |
| Number of ratings | 271 | **1.4K** |
| Positive reviews | 78.8% of reviews | **89.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 days** | Fortnightly |
| Monetization | **Freemium** | Paid |
| Size | 209 MB | 242 MB |
| Requires iOS | 18.6 | **14.4** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Confusion Studios LLC](https://appshunter.io/developer/492291715) | [AudioKit Pro](https://appshunter.io/developer/1307785645) |

## What reviewers say

### MIDI Designer Pro X

[App page](https://appshunter.io/ios/app/midi-designer-pro-x/id492291712)

This app is a professional-grade, customizable MIDI controller for music production. It allows users to control any MIDI-enabled hardware or software, with extensive community-created layouts and powerful 'superpowers' for advanced MIDI manipulation. It supports AUv3 plugins and offers robust network, Bluetooth, and USB MIDI communication.

**Highlights:** Control any MIDI-enabled hardware/software, AUv3 MIDI Processor Extension, Reliable MIDI communication (Network, Bluetooth, USB), Extensive user layout library (350+ layouts), Powerful 'Superpowers' for MIDI manipulation, Community support and layout sharing

**Features:** macOS Compatibility, iPhone Duo support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MDPx Premium iPhone Only | $1.49 | per month |
| MDPx Premium iPad Only | $2.49 | per month |
| MDPx Premium iPad, iPhone | $2.99 | per month |
| MDPx Premium Mac, iPad, iPhone | $4.99 | per month |
| MDPx Premium iPhone Only | $14.99 | per year |
| MDPx Premium iPad Only | $24.99 | per year |
| MDPx Premium iPad, iPhone | $29.99 | per year |
| MDPx Premium Mac, iPad, iPhone | $49.99 | per year |
| MDPx Premium Lifetime | $124.99 | one-time |


### 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 MIDI Designer Pro X free?

MIDI Designer Pro X is free to download, with in-app purchases available.

### Is NERD Synth A2x + AUv3 free?

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

### Which has better reviews, MIDI Designer Pro X or NERD Synth A2x + AUv3?

NERD Synth A2x + AUv3 is rated higher. MIDI Designer Pro X averages 4.6 out of 5 from 271 ratings, while NERD Synth A2x + AUv3 averages 4.9 from 1.4K ratings.

### Do MIDI Designer Pro X or NERD Synth A2x + AUv3 have ads?

Neither MIDI Designer Pro X nor NERD Synth A2x + AUv3 shows ads.

### Which is updated more often, MIDI Designer Pro X or NERD Synth A2x + AUv3?

MIDI Designer Pro X ships an update every 5 days, and NERD Synth A2x + AUv3 fortnightly. Most recently, MIDI Designer Pro X was updated on November 1, 2026 and NERD Synth A2x + AUv3 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.*