# ScaleMaster Pro vs 531 metronome

The clearest difference is review sentiment: 531 metronome at 100% against ScaleMaster Pro's 42%. 531 metronome also leads on update cadence (every 5 days vs every 2 months) and price ($2.99 vs $4.99). On ads, in-app purchases, monetization model and device support there is nothing between them.

ScaleMaster Pro costs $4.99 and 531 metronome $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ScaleMaster Pro ships an update every 2 months, 531 metronome every 5 days. The most recent releases landed on October 29, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | ScaleMaster Pro | 531 metronome |
| --- | --- | --- |
| Price | $4.99 | **$2.99** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/531-metronome/id6759196151/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 41.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | Paid | Paid |
| Size | 167 MB | 11 MB |
| Requires iOS | 26.0 | **18.4** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [RoGame Software](https://appshunter.io/developer/285831223) | [AKIHIKO YOSHIDA](https://appshunter.io/developer/1877362692) |

## What reviewers say

### ScaleMaster Pro

[App page](https://appshunter.io/ios/app/scalemaster-pro/id1163225590)

Learn musical scales on your instrument with visual aids and adjustable tempo. Explore different scales, save your practice sessions, and discover new sounds for improvisation. Adapts to various instruments and tunings.

**Highlights:** Learn scales in notation and on instrument, Adjustable tempo for practice, Save custom scale documents, Support for piano, guitar, bass, and more, Custom tunings, All common clefs for reading practice, Scale transposition

**Features:** Vision Pro support, iPhone Duo support

**In-app purchases:** none


### 531 metronome

[App page](https://appshunter.io/ios/app/531-metronome/id6759196151)

This app provides a metronome designed for complex rhythms and time signatures. It offers features like tap tempo, background playback, and swing for subdivisions, helping musicians focus on rhythm and practice.

**Highlights:** Tap tempo, Background play & lock-screen control, Swing for subdivisions, Complex time signatures, Sub accents & rests, Infinite groove creation

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ScaleMaster Pro free?

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

### Is 531 metronome free?

531 metronome costs $2.99, with no in-app purchases.

### Do ScaleMaster Pro or 531 metronome have ads?

Neither ScaleMaster Pro nor 531 metronome shows ads.

### Which is updated more often, ScaleMaster Pro or 531 metronome?

ScaleMaster Pro ships an update every 2 months, and 531 metronome every 5 days. Most recently, ScaleMaster Pro was updated on October 29, 2026 and 531 metronome on October 7, 2026.

---

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