# Audio Spectrum Analyzer dB RTA vs TB Spectrogram

The clearest difference is in-app purchases: TB Spectrogram at none against Audio Spectrum Analyzer dB RTA's 2. TB Spectrogram also leads on review sentiment (71% vs 44%) and update cadence (every 3 weeks vs every 5 months). Audio Spectrum Analyzer dB RTA's advantage is ratings volume (3K vs 50). On price, rating, ads and device support there is nothing between them.

Both are free to download. Audio Spectrum Analyzer dB RTA sells 2 in-app purchases, starting at $1.99 per month. TB Spectrogram asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.5 for Audio Spectrum Analyzer dB RTA against 4.4 for TB Spectrogram. That said, the two scores are not equally well evidenced: Audio Spectrum Analyzer dB RTA has 3K ratings behind it against 50, so its average is the more settled of the two. Written reviews are what separate them: 44% of Audio Spectrum Analyzer dB RTA's written reviews are positive against 71% of TB Spectrogram's.

Audio Spectrum Analyzer dB RTA ships an update every 5 months, TB Spectrogram every 3 weeks. The most recent releases landed on September 22, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Audio Spectrum Analyzer dB RTA | TB Spectrogram |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (3K ratings)](https://appshunter.io/ios/app/audio-spectrum-analyzer-db-rta/id1281873790/reviews)** | [4.4 (50 ratings)](https://appshunter.io/ios/app/tb-spectrogram/id1530170842/reviews) |
| Number of ratings | **3K** | 50 |
| Positive reviews | 43.6% of reviews | **71.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 24 MB | 15 MB |
| Requires iOS | 15 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Marina Polyanskaya](https://appshunter.io/developer/1519482916) | [ToneBoosters](https://appshunter.io/developer/1472446500) |

## What reviewers say

### Audio Spectrum Analyzer dB RTA

[App page](https://appshunter.io/ios/app/audio-spectrum-analyzer-db-rta/id1281873790)

Analyze sound frequencies and decibel levels with this advanced tool. Ideal for tuning audio systems, it offers real-time spectrum analysis and sound metering for various applications.

**Highlights:** Octave Band Real-Time Analyzer, FFT Plot - Fast Fourier Transform, Integrated Sound Level Meter (dB-A), Multispectral Harmonic Analyzer, Hold Max and Min Peaks, Various Window Functions

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access | $1.99 | per month |
| Spectrum Analyzer Pro | $7.99 | one-time |

**What reviewers like**

- 🚀 Excellent audio analysis tool
- 👍 Clean and intuitive interface
- 💡 Customizable frequency range
- 🔍 Accurate real-time spectrum visualization

**What reviewers complain about**

- 🐛 Compatibility issues with newer iOS versions
- 🔁 Constant prompts to upgrade to Pro version
- 🔌 High battery consumption
- 📊 Inaccurate frequency tracking in some modes

**Reported bugs**

- Freezing and crashing on certain devices
- Incorrect frequency readings in Octave RTA mode
- Inability to switch between microphone sources

**Requested features**

- External microphone support
- Ability to save and compare measurement results
- More detailed instructions and tutorials
- Vertical orientation option


### 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 Audio Spectrum Analyzer dB RTA free?

Audio Spectrum Analyzer dB RTA is free to download, with in-app purchases available.

### Is TB Spectrogram free?

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

### Which has better reviews, Audio Spectrum Analyzer dB RTA or TB Spectrogram?

Audio Spectrum Analyzer dB RTA is rated higher. Audio Spectrum Analyzer dB RTA averages 4.5 out of 5 from 3K ratings, while TB Spectrogram averages 4.4 from 50 ratings.

### Do Audio Spectrum Analyzer dB RTA or TB Spectrogram have ads?

Neither Audio Spectrum Analyzer dB RTA nor TB Spectrogram shows ads.

### Which is updated more often, Audio Spectrum Analyzer dB RTA or TB Spectrogram?

Audio Spectrum Analyzer dB RTA ships an update every 5 months, and TB Spectrogram every 3 weeks. Most recently, Audio Spectrum Analyzer dB RTA was updated on September 22, 2026 and TB Spectrogram on September 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.*