# Ultrasonic Analyzer vs Audio / Spectrum Analyzer

The clearest difference is price: Audio / Spectrum Analyzer at Free against Ultrasonic Analyzer's $19.99. Audio / Spectrum Analyzer also leads on rating (4.6 vs 3.9) and update cadence (every 2 weeks vs every 4 months). Ultrasonic Analyzer's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.

Audio / Spectrum Analyzer is free to download; Ultrasonic Analyzer costs $19.99 up front. Audio / Spectrum Analyzer sells 1 one-off in-app purchase. Ultrasonic Analyzer asks for nothing beyond the download.

Audio / Spectrum Analyzer holds the better App Store score, 4.6 against 3.9. That said, the two scores are not equally well evidenced: Audio / Spectrum Analyzer has 1K ratings behind it against 35, so its average is the more settled of the two. Written reviews point the same way: 57% of Ultrasonic Analyzer's written reviews are positive against 79% of Audio / Spectrum Analyzer's.

Ultrasonic Analyzer ships an update every 4 months, Audio / Spectrum Analyzer every 2 weeks. The most recent releases landed on September 23, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Ultrasonic Analyzer | Audio / Spectrum Analyzer |
| --- | --- | --- |
| Price | $19.99 | **Free** |
| Rating | [3.9 (35 ratings)](https://appshunter.io/ios/app/ultrasonic-analyzer/id851069926/reviews) | **[4.6 (1K ratings)](https://appshunter.io/ios/app/audio-spectrum-analyzer/id1508848574/reviews)** |
| Number of ratings | 35 | **1K** |
| Positive reviews | 57.1% of reviews | **78.6% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 2 MB | 5 MB |
| Requires iOS | **12.4** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [DEXUS Pawel Krzywdzinski](https://appshunter.io/developer/377798036) | [Loop-Sessions.LLC.](https://appshunter.io/developer/414215366) |

## What reviewers say

### Ultrasonic Analyzer

[App page](https://appshunter.io/ios/app/ultrasonic-analyzer/id851069926)

This app provides real-time audio analysis with visual representations of sound frequencies. It allows users to listen to and analyze ultrasounds, with options for transposed playback and slowed-down analysis of inaudible sounds. It supports various sampling rates and offers detailed charting and measurement tools.

**Highlights:** Real-time spectrum analysis, Spectrogram and oscilloscope views, Octave RTA analyzer, Transposed ultrasound listening, Slowed-down playback, High sampling rates up to 384kHz, Zoom and pan capabilities

**In-app purchases:** none


### Audio / Spectrum Analyzer

[App page](https://appshunter.io/ios/app/audio-spectrum-analyzer/id1508848574)

This application analyzes audio input from your microphone, displaying both the waveform and amplitude spectrum in real-time. It offers extensive customization for display, calculation, and signal generation.

**Highlights:** Simultaneous waveform and spectrum display, Configurable display layouts, Selectable FFT size and averaging, Frequency weighting options (Flat, dBA, dBC), Octave band analysis, Audio signal and noise generation, Peak hold and pitch meter

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro (Remove ads, High-Res analysis) | $11.49 | one-time |

**What reviewers like**

- 👍 Customizable features
- ⚙️ Accurate measurements
- 🚀 Helpful for troubleshooting
- 💡 Useful for ghost hunting

**What reviewers complain about**

- 🐛 Crashes and freezes
- 🔋 High battery and CPU usage
- 🚫 Inappropriate ads/content
- 🔒 Security concerns with payment info

**Reported bugs**

- Stuck on latest measurement
- White noise instead of expected functionality
- Disconnects AirPods

**Requested features**

- Sampling rate adjustment
- Wave shape tracking
- Audio file analysis
- Octave analysis


## Frequently asked questions

### Is Ultrasonic Analyzer free?

Ultrasonic Analyzer costs $19.99, with no in-app purchases.

### Is Audio / Spectrum Analyzer free?

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

### Which has better reviews, Ultrasonic Analyzer or Audio / Spectrum Analyzer?

Audio / Spectrum Analyzer is rated higher. Ultrasonic Analyzer averages 3.9 out of 5 from 35 ratings, while Audio / Spectrum Analyzer averages 4.6 from 1K ratings.

### Do Ultrasonic Analyzer or Audio / Spectrum Analyzer have ads?

Audio / Spectrum Analyzer shows ads; Ultrasonic Analyzer does not.

### Which is updated more often, Ultrasonic Analyzer or Audio / Spectrum Analyzer?

Ultrasonic Analyzer ships an update every 4 months, and Audio / Spectrum Analyzer every 2 weeks. Most recently, Ultrasonic Analyzer was updated on September 23, 2026 and Audio / Spectrum Analyzer on September 25, 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.*