# Guitar Interval Ear Trainer vs Solo

The clearest difference is price: Guitar Interval Ear Trainer at $1.99 against Solo's $17.99. Guitar Interval Ear Trainer also leads on in-app purchases (none vs 2). Solo's advantage is ratings volume (659 vs 11) and update cadence (monthly vs every 3 months). On rating, review sentiment, ads and device support there is nothing between them.

Guitar Interval Ear Trainer costs $1.99 and Solo $17.99 up front. Solo sells 2 one-off in-app purchases. Guitar Interval Ear Trainer asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for Guitar Interval Ear Trainer against 4.7 for Solo. That said, the two scores are not equally well evidenced: Solo has 659 ratings behind it against 11, so its average is the more settled of the two. Written reviews are what separate them: 87% of Guitar Interval Ear Trainer's written reviews are positive against 83% of Solo's.

Guitar Interval Ear Trainer ships an update every 3 months, Solo monthly. The most recent releases landed on November 10, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Guitar Interval Ear Trainer | Solo |
| --- | --- | --- |
| Price | **$1.99** | $17.99 |
| Rating | [4.7 (11 ratings)](https://appshunter.io/ios/app/guitar-interval-ear-trainer/id376191905/reviews) | **[4.7 (659 ratings)](https://appshunter.io/ios/app/solo-fretboard-visualization/id1537057699/reviews)** |
| Number of ratings | 11 | **659** |
| Positive reviews | **86.7% of reviews** | 83.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | — | **#84** |
| Size | 28 MB | 231 MB |
| Requires iOS | 26.6 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Rolfs Apps](https://appshunter.io/developer/376191908) | [Trio Software Ltd](https://appshunter.io/developer/1537057701) |

## What reviewers say

### Guitar Interval Ear Trainer

[App page](https://appshunter.io/ios/app/guitar-interval-ear-trainer/id376191905)

Master musical intervals on the guitar with this comprehensive ear training app. Learn to identify distances between notes visually and aurally, improving your ability to decipher music and replicate melodies.

**Highlights:** 17 selectable intervals, Melodic and harmonic interval options, Visual fretboard representation, Practice and quiz modes, Alternate tuning support, Scale context practice, Left-handed and bass guitar support

**Features:** iPhone Duo support

**In-app purchases:** none


### Solo

[App page](https://appshunter.io/ios/app/solo-fretboard-visualization/id1537057699)

**Currently charting:** #84 Top Paid · Music (US App Store)

Master your guitar fretboard with this interactive trainer. Learn note names, intervals, chord changes, and scales through guided exercises. Designed by professional guitarists, it offers customizable workouts for all skill levels.

**Highlights:** Fretboard visualization, Note name trainer, Interval shape memorization, Chord change outlining, Scale practice, Interactive fretboards, Customizable workouts

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Custom Tunings | $1.99 | one-time |
| Custom Chord Progressions | $5.99 | one-time |

**What reviewers like**

- 🚀 Excellent practice tool
- 👍 Helps improve fretboard knowledge
- 👍 Versatile and configurable
- 👍 Detailed video tutorials
- 👍 Accurate note detection

**What reviewers complain about**

- 🐛 Note detection issues
- 🐛 App crashes
- 🐛 Lack of customization options
- 🐛 Unintuitive for beginners
- 🐛 Limited functionality for the price

**Reported bugs**

- Crashes when launching the app
- Inconsistent note detection
- Inability to save progress or settings

**Requested features**

- Add ability to create custom chord progressions
- Integrate metronome functionality
- Provide visual representation of intervals on staff
- Add option to practice natural notes only
- Implement option to hear chord tones in the background


## Frequently asked questions

### Is Guitar Interval Ear Trainer free?

Guitar Interval Ear Trainer costs $1.99, with no in-app purchases.

### Is Solo free?

Solo costs $17.99, and also offers in-app purchases.

### Which has better reviews, Guitar Interval Ear Trainer or Solo?

Solo is rated higher. Guitar Interval Ear Trainer averages 4.7 out of 5 from 11 ratings, while Solo averages 4.7 from 659 ratings.

### Do Guitar Interval Ear Trainer or Solo have ads?

Neither Guitar Interval Ear Trainer nor Solo shows ads.

### Which is updated more often, Guitar Interval Ear Trainer or Solo?

Guitar Interval Ear Trainer ships an update every 3 months, and Solo monthly. Most recently, Guitar Interval Ear Trainer was updated on November 10, 2026 and Solo on November 7, 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.*