# TB Spectrogram vs ArcoPraxis

The clearest difference is price: TB Spectrogram at Free against ArcoPraxis's $9.99. TB Spectrogram also leads on iOS requirement (13.0 vs 17.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

TB Spectrogram is free to download; ArcoPraxis costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

TB Spectrogram ships an update every 3 weeks, ArcoPraxis fortnightly. The most recent releases landed on October 22, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | TB Spectrogram | ArcoPraxis |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| 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 | **Fortnightly** |
| Monetization | Paid | — |
| Size | 15 MB | 17 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | +4 |
| Developer | [ToneBoosters](https://appshunter.io/developer/1472446500) | [Aaron Celestian](https://appshunter.io/developer/1844958071) |

## 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


### ArcoPraxis

[App page](https://appshunter.io/ios/app/arcopraxis/id6790646779)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TB Spectrogram free?

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

### Is ArcoPraxis free?

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

### Do TB Spectrogram or ArcoPraxis have ads?

Neither TB Spectrogram nor ArcoPraxis shows ads.

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

TB Spectrogram ships an update every 3 weeks, and ArcoPraxis fortnightly. Most recently, TB Spectrogram was updated on October 22, 2026 and ArcoPraxis on October 19, 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.*