# Intervals and Chords vs Score Master

The clearest difference is price: Intervals and Chords at $5.99 against Score Master's $9.99. Intervals and Chords also leads on iOS requirement (15.0 vs 17.5). Score Master's advantage is review sentiment (100% vs 83%) and update cadence (every 3 weeks vs every 2 months). On ads, in-app purchases, monetization model and device support there is nothing between them.

Intervals and Chords costs $5.99 and Score Master $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Intervals and Chords ships an update every 2 months, Score Master every 3 weeks. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Intervals and Chords | Score Master |
| --- | --- | --- |
| Price | **$5.99** | $9.99 |
| Rating | **[4.8 (10 ratings)](https://appshunter.io/ios/app/intervals-and-chords/id6447244430/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 83.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Paid | Paid |
| Size | 17 MB | 15 MB |
| Requires iOS | **15.0** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Instinctive](https://appshunter.io/developer/553439405) | [Sanghyun Park](https://appshunter.io/developer/1846257439) |

## What reviewers say

### Intervals and Chords

[App page](https://appshunter.io/ios/app/intervals-and-chords/id6447244430)

This music theory app helps musicians of all levels visualize and understand chords. It features real-time chord detection, key selection, and enhanced visualization for deeper harmonic exploration.

**Highlights:** Real-time chord detection, Key selection for chord adaptation, Enhanced chord rendering, Exploration of inversions and voicings, Instant musical feedback

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

**In-app purchases:** none


### Score Master

[App page](https://appshunter.io/ios/app/score-master-music-pdf-reader/id6769524427)

This app is a professional PDF sheet music reader designed for musicians. It offers features like high-quality PDF rendering, photo import, annotation tools, a metronome, and a tuner to enhance practice and performance workflows.

**Highlights:** High-quality PDF rendering, Photo to PDF conversion, Annotation tools, Built-in metronome, Chromatic tuner, Bluetooth page turner support

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

**In-app purchases:** none


## Frequently asked questions

### Is Intervals and Chords free?

Intervals and Chords costs $5.99, with no in-app purchases.

### Is Score Master free?

Score Master costs $9.99, with no in-app purchases.

### Do Intervals and Chords or Score Master have ads?

Neither Intervals and Chords nor Score Master shows ads.

### Which is updated more often, Intervals and Chords or Score Master?

Intervals and Chords ships an update every 2 months, and Score Master every 3 weeks. Most recently, Intervals and Chords was updated on November 3, 2026 and Score Master on November 5, 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.*