# MuSA_RT vs TB Spectrogram

The clearest difference is review sentiment: TB Spectrogram at 71% against MuSA_RT's 0%. TB Spectrogram also leads on ratings volume (50 vs 1) and update cadence (every 3 weeks vs every 3 months). MuSA_RT's advantage is rating (5.0 vs 4.4) and monetization model (free vs paid). 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 holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: TB Spectrogram has 50 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 0% of MuSA_RT's written reviews are positive against 71% of TB Spectrogram's, so the app with the better star average is not the one people write more warmly about.

MuSA_RT ships an update every 3 months, TB Spectrogram every 3 weeks. The most recent releases landed on October 5, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | MuSA_RT | TB Spectrogram |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/musa-rt/id506866959/reviews)** | [4.4 (50 ratings)](https://appshunter.io/ios/app/tb-spectrogram/id1530170842/reviews) |
| Number of ratings | 1 | **50** |
| Positive reviews | 0.0% of reviews | **71.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | **Free** | Paid |
| Size | 3 MB | 15 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alexandre Francois](https://appshunter.io/developer/506866962) | [ToneBoosters](https://appshunter.io/developer/1472446500) |

## 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


### TB Spectrogram

[App page](https://appshunter.io/ios/app/tb-spectrogram/id1530170842)

This app provides real-time audio analysis with a spectrogram, spectrum analyzer, and goniometer. It can be used as a standalone application or as an AUv3 plugin within compatible music production hosts. Visualize your audio in detail with adjustable settings and multiple display options.

**Highlights:** Real-time spectrogram and spectrum analysis, Goniometer for stereo signal analysis, AUv3 plugin compatibility, Adjustable frequency and time resolution, Customizable color themes, On-screen piano keyboard mapping

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is MuSA_RT free?

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

### Is TB Spectrogram free?

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

### Which has better reviews, MuSA_RT or TB Spectrogram?

MuSA_RT is rated higher. MuSA_RT averages 5.0 out of 5 from 1 ratings, while TB Spectrogram averages 4.4 from 50 ratings.

### Do MuSA_RT or TB Spectrogram have ads?

Neither MuSA_RT nor TB Spectrogram shows ads.

### Which is updated more often, MuSA_RT or TB Spectrogram?

MuSA_RT ships an update every 3 months, and TB Spectrogram every 3 weeks. Most recently, MuSA_RT was updated on October 5, 2026 and TB Spectrogram on October 14, 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.*