# Sonofield Ear Trainer vs Scale Theory

The clearest difference is price: Sonofield Ear Trainer at Free against Scale Theory's $1.99. Sonofield Ear Trainer also leads on ads (none vs shown) and device support (3 vs 1). Scale Theory's advantage is in-app purchases (none vs 5).

Sonofield Ear Trainer is free to download; Scale Theory costs $1.99 up front. Sonofield Ear Trainer sells 4 one-off in-app purchases. Scale Theory asks for nothing beyond the download.

## The numbers

| Metric | Sonofield Ear Trainer | Scale Theory |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.9 (389 ratings)](https://appshunter.io/ios/app/sonofield-ear-trainer/id6740409139/reviews)** | — |
| Number of ratings | **389** | — |
| Positive reviews | 88.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 9 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 105 MB | 19 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Sonofield Ear Trainer Education Ltd.](https://appshunter.io/developer/1789801335) | [YellowDress](https://appshunter.io/developer/509933147) |

## 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


### Scale Theory

[App page](https://appshunter.io/ios/app/scale-theory/id6761800685)

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

**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 Scale Theory free?

Scale Theory costs $1.99, with no in-app purchases.

### Do Sonofield Ear Trainer or Scale Theory have ads?

Scale Theory shows ads; Sonofield Ear Trainer does not.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*