# Audio Spectrum Analyzer dB RTA vs WebSDR

The clearest difference is price: Audio Spectrum Analyzer dB RTA at Free against WebSDR's $5.99. Audio Spectrum Analyzer dB RTA also leads on rating (4.5 vs 2.4) and ratings volume (3K vs 27). WebSDR's advantage is in-app purchases (none vs 2). On ads, device support and iOS requirement there is nothing between them.

Audio Spectrum Analyzer dB RTA is free to download; WebSDR costs $5.99 up front. Audio Spectrum Analyzer dB RTA sells 2 in-app purchases, starting at $1.99 per month. WebSDR asks for nothing beyond the download.

Audio Spectrum Analyzer dB RTA holds the better App Store score, 4.5 against 2.4. That said, the two scores are not equally well evidenced: Audio Spectrum Analyzer dB RTA has 3K ratings behind it against 27, so its average is the more settled of the two. Written reviews point the same way: 44% of Audio Spectrum Analyzer dB RTA's written reviews are positive against 21% of WebSDR's.

Audio Spectrum Analyzer dB RTA ships an update every 5 months, WebSDR every 11 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | Audio Spectrum Analyzer dB RTA | WebSDR |
| --- | --- | --- |
| Price | **Free** | $5.99 |
| Rating | **[4.5 (3K ratings)](https://appshunter.io/ios/app/audio-spectrum-analyzer-db-rta/id1281873790/reviews)** | [2.4 (27 ratings)](https://appshunter.io/ios/app/websdr/id1558990423/reviews) |
| Number of ratings | **3K** | 27 |
| Positive reviews | **43.6% of reviews** | 20.6% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 11 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 24 MB | 20 MB |
| Requires iOS | 15 | **14.5** |
| 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


### WebSDR

[App page](https://appshunter.io/ios/app/websdr/id1558990423)

This Audio Unit plugin allows musicians to incorporate live radio broadcasts into their music. It accesses Software Defined Radio streams from servers worldwide, offering unique audio textures for performances and mixes.

**Highlights:** Plays Software Defined Radio streams, Integrates live radio audio into music, Accesses global radio servers, Supports various radio modes (LSB, USB, CW, AM, FM), Provides unique audio textures for mixes

**Features:** macOS Compatibility

**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 WebSDR free?

WebSDR costs $5.99, with no in-app purchases.

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

Audio Spectrum Analyzer dB RTA is rated higher. Audio Spectrum Analyzer dB RTA averages 4.5 out of 5 from 3K ratings, while WebSDR averages 2.4 from 27 ratings.

### Do Audio Spectrum Analyzer dB RTA or WebSDR have ads?

Neither Audio Spectrum Analyzer dB RTA nor WebSDR shows ads.

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

Audio Spectrum Analyzer dB RTA ships an update every 5 months, and WebSDR every 11 months. Most recently, Audio Spectrum Analyzer dB RTA was updated on November 3, 2026 and WebSDR on November 3, 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.*