# MusicMath vs Decibel Display

The clearest difference is price: Decibel Display at Free against MusicMath's $9.99. Decibel Display also leads on update cadence (every 5 weeks vs every 7 months). MusicMath's advantage is review sentiment (73% vs 40%). On rating, ratings volume, ads and in-app purchases there is nothing between them.

Decibel Display is free to download; MusicMath costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.3 for MusicMath against 4.3 for Decibel Display. Both are backed by a comparable volume of ratings — 12 and 11 respectively. Written reviews are what separate them: 73% of MusicMath's written reviews are positive against 40% of Decibel Display's.

MusicMath ships an update every 7 months, Decibel Display every 5 weeks. Both last shipped on October 19, 2026.

## The numbers

| Metric | MusicMath | Decibel Display |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | [4.3 (12 ratings)](https://appshunter.io/ios/app/musicmath/id381525762/reviews) | [4.3 (11 ratings)](https://appshunter.io/ios/app/decibel-display/id1480358065/reviews) |
| Number of ratings | **12** | 11 |
| Positive reviews | **73.3% of reviews** | 40.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 weeks** |
| Monetization | Paid | **Free** |
| Size | 12 MB | 12 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Laurent Colson](https://appshunter.io/developer/381525765) | [Process Audio](https://appshunter.io/developer/1480358064) |

## What reviewers say

### MusicMath

[App page](https://appshunter.io/ios/app/musicmath/id381525762)

This musical tool offers a comprehensive suite of calculators for audio professionals and musicians. It includes converters for timecode, tempo, note frequencies, and sample lengths, alongside a tap tempo metronome and detailed note-to-frequency tables with customizable temperaments.

**Highlights:** Timecode calculator with frame format management, Tap tempo with metronome, Tempo to delay (milliseconds/hertz) converter, Note to frequency converter with temperaments, Sample length converter, Frequency to note converter

**Features:** Vision Pro support

**In-app purchases:** none


### Decibel Display

[App page](https://appshunter.io/ios/app/decibel-display/id1480358065)

This companion app displays audio metering data from its desktop counterpart on your smartphone or tablet. Design custom multi-meter presets with various meter types, colors, and shapes for real-time audio analysis.

**Highlights:** Real-time audio metering, Customizable meter presets, VU Meter, LUFS, RMS, Spectrum Analyzer, Phase-scope, Modular design

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

**In-app purchases:** none


## Frequently asked questions

### Is MusicMath free?

MusicMath costs $9.99, with no in-app purchases.

### Is Decibel Display free?

Decibel Display is free to download, with no in-app purchases.

### Which has better reviews, MusicMath or Decibel Display?

MusicMath and Decibel Display are both rated 4.3 out of 5 on the App Store, from 12 and 11 ratings respectively.

### Do MusicMath or Decibel Display have ads?

Neither MusicMath nor Decibel Display shows ads.

### Which is updated more often, MusicMath or Decibel Display?

MusicMath ships an update every 7 months, and Decibel Display every 5 weeks. Most recently, MusicMath was updated on October 19, 2026 and Decibel Display on October 19, 2026.

---

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