# Music Theory Intervals vs Equalizer Pro +

The clearest difference is rating: Music Theory Intervals at 4.7 against Equalizer Pro +'s 4.2. Music Theory Intervals also leads on price ($1.99 vs $4.99). Equalizer Pro +'s advantage is update cadence (fortnightly vs every 28 months) and ratings volume (557 vs 3). On ads, in-app purchases and monetization model there is nothing between them.

Music Theory Intervals costs $1.99 and Equalizer Pro + $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Music Theory Intervals holds the better App Store score, 4.7 against 4.2. That said, the two scores are not equally well evidenced: Equalizer Pro + has 557 ratings behind it against 3, so its average is the more settled of the two.

Music Theory Intervals ships an update every 28 months, Equalizer Pro + fortnightly. The most recent releases landed on September 26, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Music Theory Intervals | Equalizer Pro + |
| --- | --- | --- |
| Price | **$1.99** | $4.99 |
| Rating | **[4.7 (3 ratings)](https://appshunter.io/ios/app/music-theory-intervals/id511630157/reviews)** | [4.2 (557 ratings)](https://appshunter.io/ios/app/equalizer-pro-plus/id1354769058/reviews) |
| Number of ratings | 3 | **557** |
| Positive reviews | — | 46.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 28 months | **Fortnightly** |
| Monetization | Paid | Paid |
| Best chart rank | — | **#142** |
| Size | 43 MB | 43 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Patrick Q. Kelly](https://appshunter.io/developer/310068987) | [Tachyon Factory Inc.](https://appshunter.io/developer/1354769057) |

## What reviewers say

### Music Theory Intervals

[App page](https://appshunter.io/ios/app/music-theory-intervals/id511630157)

This app helps musicians of all levels identify musical intervals by ear or sight. It offers various training modes, clef support, and customizable settings for practice. Results can be saved and printed for progress tracking.

**Highlights:** Interval recognition by sight and sound, Simple and compound interval training, Audio, Visual, and combined modes, Treble, Alto, Tenor, Bass clef support, Customizable interval playback, Printable Grade Book for results

**In-app purchases:** none


### Equalizer Pro +

[App page](https://appshunter.io/ios/app/equalizer-pro-plus/id1354769058)

**Currently charting:** #142 Top Paid · Music (US App Store)

Enhance your audio experience with a professional equalizer and a full-featured music player. Enjoy high-quality sound, customizable EQ curves, and support for various audio formats. Manage your music library with ease, including playlist creation and song transfer options.

**Highlights:** High-performance equalizer with 32-bit float processing, Customizable EQ curves with unlimited points, Plays MP3, FLAC, OGG, WAV, APE files, Supports iPod Library playback, Multiple playlists and playback controls, Song transfer via iTunes File Sharing and WiFi, CarPlay and Dark Appearance support

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Great app
- 👍 Excellent equalizer
- 👍 Powerful EQ
- 👍 Customizable
- 👍 Robust features

**What reviewers complain about**

- 🐛 Compatibility issues with streaming services
- 🐛 Playback problems
- 🐛 Crashes and stability concerns
- 🐛 Limited functionality
- 🐛 Restricted access to music library

**Reported bugs**

- Inability to play songs from iTunes library
- Issues with CarPlay integration
- Inconsistent behavior with iOS updates
- Syncing problems with playlists and album art
- Frequent crashes and freezes

**Requested features**

- Expand support for streaming services
- Improve playlist management
- Add more preset EQ options
- Enhance visualizer and UI customization
- Optimize performance for older devices


## Frequently asked questions

### Is Music Theory Intervals free?

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

### Is Equalizer Pro + free?

Equalizer Pro + costs $4.99, with no in-app purchases.

### Which has better reviews, Music Theory Intervals or Equalizer Pro +?

Music Theory Intervals is rated higher. Music Theory Intervals averages 4.7 out of 5 from 3 ratings, while Equalizer Pro + averages 4.2 from 557 ratings.

### Do Music Theory Intervals or Equalizer Pro + have ads?

Neither Music Theory Intervals nor Equalizer Pro + shows ads.

### Which is updated more often, Music Theory Intervals or Equalizer Pro +?

Music Theory Intervals ships an update every 28 months, and Equalizer Pro + fortnightly. Most recently, Music Theory Intervals was updated on September 26, 2026 and Equalizer Pro + on October 13, 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.*