# Sonofield Ear Trainer vs Guitar Machines!

The clearest difference is in-app purchases: Guitar Machines! at none against Sonofield Ear Trainer's 5. Guitar Machines! also leads on review sentiment (100% vs 89%). Sonofield Ear Trainer's advantage is ratings volume (392 vs 43) and update cadence (every 9 days vs every 3 weeks). On price, rating, ads and device support there is nothing between them.

Both are free to download. Sonofield Ear Trainer sells 4 one-off in-app purchases. Guitar Machines! asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for Sonofield Ear Trainer against 5.0 for Guitar Machines!. That said, the two scores are not equally well evidenced: Sonofield Ear Trainer has 392 ratings behind it against 43, so its average is the more settled of the two. Written reviews are what separate them: 89% of Sonofield Ear Trainer's written reviews are positive against 100% of Guitar Machines!'s.

Sonofield Ear Trainer ships an update every 9 days, Guitar Machines! every 3 weeks. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Sonofield Ear Trainer | Guitar Machines! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (392 ratings)](https://appshunter.io/ios/app/sonofield-ear-trainer/id6740409139/reviews) | **[5.0 (43 ratings)](https://appshunter.io/ios/app/guitar-machines/id6757989929/reviews)** |
| Number of ratings | **392** | 43 |
| Positive reviews | 88.8% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 3 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 105 MB | 32 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sonofield Ear Trainer Education Ltd.](https://appshunter.io/developer/1789801335) | [Quinn Fetrow](https://appshunter.io/developer/1870110908) |

## What reviewers say

### Sonofield Ear Trainer

[App page](https://appshunter.io/ios/app/sonofield-ear-trainer/id6740409139)

This app helps musicians develop their ear by focusing on the feeling of individual notes within a key, rather than traditional interval training. It uses sustained drones and offers various modes like identifying scale degrees, melodies, and singing exercises. The app adapts to your skill level with an intuitive interface and progression path.

**Highlights:** Feeling-based note recognition, Scale degree identification, Melody recognition training, Singing exercises, Hands-free training mode, Interactive exploration instrument

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Pro | $14.99 | one-time |
| Lifetime Pro | $17.99 | one-time |
| Lifetime Pro | $19.99 | one-time |
| Lifetime Pro | $24.99 | one-time |

**What reviewers like**

- 🚀 Excellent ear training tool
- 👍 Intuitive and user-friendly design
- 🎶 Effective for improving relative pitch
- 💡 Innovative use of drone and scale degrees
- 🎯 Helpful for aural skills development

**What reviewers complain about**

- 🤔 Challenging for true beginners
- 💭 Desire for more customization options

**Reported bugs**

- None reported

**Requested features**

- Option to switch between 12TET and just intonation
- Ability to reduce octave range
- Incorporate more timbre options for drone and notes
- Tracking and visualization of progress and learned skills
- Add interactive tutorial for level 1


### Guitar Machines!

[App page](https://appshunter.io/ios/app/guitar-machines/id6757989929)

Learn fundamental guitar theory with four interactive "machines." Visualize notes, scales, and arpeggios on the fretboard, and even see song progressions. Designed to help you master guitar playing.

**Highlights:** Note learning on fretboard, Customizable scale learning, Arpeggio visualization, Song progression analysis, Music theory education

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sonofield Ear Trainer free?

Sonofield Ear Trainer is free to download, with in-app purchases available.

### Is Guitar Machines! free?

Guitar Machines! is free to download, with no in-app purchases.

### Which has better reviews, Sonofield Ear Trainer or Guitar Machines!?

Guitar Machines! is rated higher. Sonofield Ear Trainer averages 4.9 out of 5 from 392 ratings, while Guitar Machines! averages 5.0 from 43 ratings.

### Do Sonofield Ear Trainer or Guitar Machines! have ads?

Neither Sonofield Ear Trainer nor Guitar Machines! shows ads.

### Which is updated more often, Sonofield Ear Trainer or Guitar Machines!?

Sonofield Ear Trainer ships an update every 9 days, and Guitar Machines! every 3 weeks. Most recently, Sonofield Ear Trainer was updated on November 4, 2026 and Guitar Machines! on October 31, 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.*