# MuSA_RT vs ToneDex

The clearest difference is update cadence: ToneDex at every 3 weeks against MuSA_RT's every 3 months. ToneDex also leads on iOS requirement (12.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

MuSA_RT ships an update every 3 months, ToneDex every 3 weeks. The most recent releases landed on October 22, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | MuSA_RT | ToneDex |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/musa-rt/id506866959/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 3 MB | 30 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alexandre Francois](https://appshunter.io/developer/506866962) | [jun miyakawa](https://appshunter.io/developer/1838087647) |

## What reviewers say

### MuSA_RT

[App page](https://appshunter.io/ios/app/musa-rt/id506866959)

This app visualizes music tonality in 3D using advanced algorithms. It analyzes audio from your microphone to identify chords and keys, displaying them with a rotating camera or in augmented reality.

**Highlights:** 3D tonality visualization, Audio analysis for pitch and context, Chord and key identification, Augmented Reality mode, Smooth camera rotation for unobstructed views

**In-app purchases:** none


### ToneDex

[App page](https://appshunter.io/ios/app/tonedex/id6752113481)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MuSA_RT free?

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

### Is ToneDex free?

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

### Do MuSA_RT or ToneDex have ads?

Neither MuSA_RT nor ToneDex shows ads.

### Which is updated more often, MuSA_RT or ToneDex?

MuSA_RT ships an update every 3 months, and ToneDex every 3 weeks. Most recently, MuSA_RT was updated on October 22, 2026 and ToneDex on October 30, 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.*