# Audio Spectrum Analyzer dB RTA vs Oscilloscope & Spectrogram

The clearest difference is price: Audio Spectrum Analyzer dB RTA at Free against Oscilloscope & Spectrogram's $5.99. Audio Spectrum Analyzer dB RTA also leads on ratings volume (3K vs 28). Oscilloscope & Spectrogram's advantage is in-app purchases (none vs 2) and update cadence (every 4 days vs every 5 months). On rating, ads and device support there is nothing between them.

Audio Spectrum Analyzer dB RTA is free to download; Oscilloscope & Spectrogram costs $5.99 up front. Audio Spectrum Analyzer dB RTA sells 2 in-app purchases, starting at $1.99 per month. Oscilloscope & 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 4.6 for Oscilloscope & Spectrogram. That said, the two scores are not equally well evidenced: Audio Spectrum Analyzer dB RTA has 3K ratings behind it against 28, 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 70% of Oscilloscope & Spectrogram's.

Audio Spectrum Analyzer dB RTA ships an update every 5 months, Oscilloscope & Spectrogram every 4 days. The most recent releases landed on September 22, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Audio Spectrum Analyzer dB RTA | Oscilloscope & Spectrogram |
| --- | --- | --- |
| Price | **Free** | $5.99 |
| Rating | [4.5 (3K ratings)](https://appshunter.io/ios/app/audio-spectrum-analyzer-db-rta/id1281873790/reviews) | **[4.6 (28 ratings)](https://appshunter.io/ios/app/oscilloscope-and-spectrogram/id1525484137/reviews)** |
| Number of ratings | **3K** | 28 |
| Positive reviews | 43.6% of reviews | **70.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 4 days** |
| Monetization | **Free with in-app purchases** | Paid |
| Best chart rank | — | **#199** |
| Size | 24 MB | 3 MB |
| Requires iOS | 15 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Marina Polyanskaya](https://appshunter.io/developer/1519482916) | [Blue Mangoo Consulting Company Limited](https://appshunter.io/developer/1475107602) |

## 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


### Oscilloscope & Spectrogram

[App page](https://appshunter.io/ios/app/oscilloscope-and-spectrogram/id1525484137)

**Currently charting:** #199 Top Paid · Music (US App Store)

Analyze audio in real-time with detailed oscilloscope and spectrogram views. Pause, scroll, and zoom to precisely identify frequencies, notes, and sound events. Offers advanced triggering and a unique Bark-frequency scale for detailed analysis.

**Highlights:** Real-time oscilloscope and spectrogram, Pause and scroll audio history, Pinch-to-zoom functionality, Frequency and MIDI note identification, Stereo and mono views, Trigger with lookahead

**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 Oscilloscope & Spectrogram free?

Oscilloscope & Spectrogram costs $5.99, with no in-app purchases.

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

Oscilloscope & Spectrogram is rated higher. Audio Spectrum Analyzer dB RTA averages 4.5 out of 5 from 3K ratings, while Oscilloscope & Spectrogram averages 4.6 from 28 ratings.

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

Neither Audio Spectrum Analyzer dB RTA nor Oscilloscope & Spectrogram shows ads.

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

Audio Spectrum Analyzer dB RTA ships an update every 5 months, and Oscilloscope & Spectrogram every 4 days. Most recently, Audio Spectrum Analyzer dB RTA was updated on September 22, 2026 and Oscilloscope & Spectrogram on September 17, 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.*