# TB Spectrogram vs Rytmo

The clearest difference is update cadence: TB Spectrogram at every 3 weeks against Rytmo's every 4 months. TB Spectrogram also leads on iOS requirement (13.0 vs 17.6). 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.

TB Spectrogram ships an update every 3 weeks, Rytmo every 4 months. The most recent releases landed on September 14, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | TB Spectrogram | Rytmo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (50 ratings)](https://appshunter.io/ios/app/tb-spectrogram/id1530170842/reviews)** | — |
| Number of ratings | **50** | — |
| Positive reviews | 71.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | Paid | — |
| Size | 15 MB | 35 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ToneBoosters](https://appshunter.io/developer/1472446500) | [KYRIAKOS MICHAIL DIAOURTAS](https://appshunter.io/developer/1808686964) |

## What reviewers say

### 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


### Rytmo

[App page](https://appshunter.io/ios/app/rytmo-glow-kit/id6744648182)

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

**In-app purchases:** none


## Frequently asked questions

### Is TB Spectrogram free?

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

### Is Rytmo free?

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

### Do TB Spectrogram or Rytmo have ads?

Neither TB Spectrogram nor Rytmo shows ads.

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

TB Spectrogram ships an update every 3 weeks, and Rytmo every 4 months. Most recently, TB Spectrogram was updated on September 14, 2026 and Rytmo on September 9, 2026.

---

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