# What Note Is This? vs NERD Synth A2x + AUv3

The clearest difference is rating: NERD Synth A2x + AUv3 at 4.9 against What Note Is This?'s 2.7. NERD Synth A2x + AUv3 also leads on review sentiment (90% vs 60%) and ratings volume (1.3K vs 3). What Note Is This?'s advantage is price ($0.99 vs $5.99) and chart position (#191 vs unranked). On ads, in-app purchases, monetization model and device support there is nothing between them.

What Note Is This? costs $0.99 and NERD Synth A2x + AUv3 $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 2.7. That said, the two scores are not equally well evidenced: NERD Synth A2x + AUv3 has 1.3K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 60% of What Note Is This?'s written reviews are positive against 90% of NERD Synth A2x + AUv3's.

What Note Is This? ships an update every 2 months, NERD Synth A2x + AUv3 fortnightly. The most recent releases landed on October 5, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | What Note Is This? | NERD Synth A2x + AUv3 |
| --- | --- | --- |
| Price | **$0.99** | $5.99 |
| Rating | [2.7 (3 ratings)](https://appshunter.io/ios/app/what-note-is-this/id456134975/reviews) | **[4.9 (1.3K ratings)](https://appshunter.io/ios/app/nerd-synth-a2x-plus-auv3/id6478898564/reviews)** |
| Number of ratings | 3 | **1.3K** |
| Positive reviews | 60.0% of reviews | **90.4% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Paid | Paid |
| Best chart rank | **#191** | — |
| Size | 11 MB | 242 MB |
| Requires iOS | **7.0** | 14.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Okeedoke Studios](https://appshunter.io/developer/456134978) | [AudioKit Pro](https://appshunter.io/developer/1307785645) |

## What reviewers say

### What Note Is This?

[App page](https://appshunter.io/ios/app/what-note-is-this/id456134975)

**Currently charting:** #191 Top Paid · Music (US App Store)

This app helps users learn to read music notes through interactive practice and quizzes. It offers customizable modes, progress tracking with achievements, and is suitable for all ages. Learn notes on the go with a universal design.

**Highlights:** Practice mode with flashcards, 10-note quizzes, Customizable clef and difficulty, Achievement stickers, Universal design for all devices, Beginner mode for sharps and flats

**In-app purchases:** none


### 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 What Note Is This? free?

What Note Is This? costs $0.99, 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, What Note Is This? or NERD Synth A2x + AUv3?

NERD Synth A2x + AUv3 is rated higher. What Note Is This? averages 2.7 out of 5 from 3 ratings, while NERD Synth A2x + AUv3 averages 4.9 from 1.3K ratings.

### Do What Note Is This? or NERD Synth A2x + AUv3 have ads?

Neither What Note Is This? nor NERD Synth A2x + AUv3 shows ads.

### Which is updated more often, What Note Is This? or NERD Synth A2x + AUv3?

What Note Is This? ships an update every 2 months, and NERD Synth A2x + AUv3 fortnightly. Most recently, What Note Is This? was updated on October 5, 2026 and NERD Synth A2x + AUv3 on October 16, 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.*