# Oscilloscope vs Audio Spectrum Analyzer Pro

The clearest difference is price: Audio Spectrum Analyzer Pro at Free against Oscilloscope's $19.99. Audio Spectrum Analyzer Pro also leads on rating (4.4 vs 4.1) and ratings volume (239 vs 19). Oscilloscope's advantage is in-app purchases (none vs 2) and review sentiment (72% vs 57%). On update cadence, ads and device support there is nothing between them.

Audio Spectrum Analyzer Pro is free to download; Oscilloscope costs $19.99 up front. Audio Spectrum Analyzer Pro sells 2 in-app purchases, starting at $19.99 per year. Oscilloscope asks for nothing beyond the download.

Audio Spectrum Analyzer Pro holds the better App Store score, 4.4 against 4.1. That said, the two scores are not equally well evidenced: Audio Spectrum Analyzer Pro has 239 ratings behind it against 19, so its average is the more settled of the two. Written reviews complicate that: 72% of Oscilloscope's written reviews are positive against 57% of Audio Spectrum Analyzer Pro's, so the app with the better star average is not the one people write more warmly about.

Oscilloscope ships an update every 8 months, Audio Spectrum Analyzer Pro every 7 months. Both last shipped on October 20, 2026.

## The numbers

| Metric | Oscilloscope | Audio Spectrum Analyzer Pro |
| --- | --- | --- |
| Price | $19.99 | **Free** |
| Rating | [4.1 (19 ratings)](https://appshunter.io/ios/app/oscilloscope/id388636804/reviews) | **[4.4 (239 ratings)](https://appshunter.io/ios/app/audio-spectrum-analyzer-pro/id1152352806/reviews)** |
| Number of ratings | 19 | **239** |
| Positive reviews | **71.7% of reviews** | 57.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 7 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 8 MB | 40 MB |
| Requires iOS | 16 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ONYX Apps](https://appshunter.io/developer/356553882) | [Vlad Polyanskiy](https://appshunter.io/developer/438646985) |

## What reviewers say

### Oscilloscope

[App page](https://appshunter.io/ios/app/oscilloscope/id388636804)

Analyze audio and analog signals with a portable oscilloscope. Features include waveform display, triggering controls, and a built-in signal generator for various waveforms. Supports external input for more advanced measurements.

**Highlights:** Real-time waveform display, Triggering modes, Signal measurement cursors, Built-in signal generator, Dual channel input support, Reference signal calibration, Export traces as text file

**In-app purchases:** none


### Audio Spectrum Analyzer Pro

[App page](https://appshunter.io/ios/app/audio-spectrum-analyzer-pro/id1152352806)

Analyze sound frequencies in real-time with this powerful tool. It offers detailed octave band analysis, FFT plots, and various measurement scales. Supports multiple microphones and noise analysis features for accurate audio insights.

**Highlights:** Octave Band Real Time Analyzer, FFT Plot (Fast Fourier Transform), Sound level meter (dB meter), Noise Rating and Noise Criterion support, Support for external microphones, Pre-calibrated mic profiles

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Mode | $19.99 | per year |
| Premium Pack | $29.99 | one-time |

**What reviewers like**

- 👍 Intuitive and easy-to-use interface
- 💰 Completely free with no ads
- 🎯 Accurate frequency and spectrum analysis
- 📊 Multiple visualization modes (FFT, spectrograph, bar display)
- 🔧 Professional-grade audio measurement tool

**What reviewers complain about**

- 💸 Aggressive subscription/paywall nags
- 🔄 Frequent iOS compatibility issues after updates
- 📉 Features moved behind paywall in recent updates
- 🐛 App crashes on startup (especially iOS 16/26)
- ⚠️ Misleading free trial that requires payment

**Reported bugs**

- App crashes on iOS 16 and iOS 26 launches
- FFT resolution not working after iOS updates
- Graph display freezes or becomes unresponsive
- Spectrograph mode too slow on newer iPhones
- Frequency alignment issues with dynamic display

**Requested features**

- Audio file upload capability
- White noise/test signal generator
- Microphone calibration file support
- Recording functionality with timestamp
- Multiple frequency cursors for comparison


## Frequently asked questions

### Is Oscilloscope free?

Oscilloscope costs $19.99, with no in-app purchases.

### Is Audio Spectrum Analyzer Pro free?

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

### Which has better reviews, Oscilloscope or Audio Spectrum Analyzer Pro?

Audio Spectrum Analyzer Pro is rated higher. Oscilloscope averages 4.1 out of 5 from 19 ratings, while Audio Spectrum Analyzer Pro averages 4.4 from 239 ratings.

### Do Oscilloscope or Audio Spectrum Analyzer Pro have ads?

Neither Oscilloscope nor Audio Spectrum Analyzer Pro shows ads.

### Which is updated more often, Oscilloscope or Audio Spectrum Analyzer Pro?

Oscilloscope ships an update every 8 months, and Audio Spectrum Analyzer Pro every 7 months. Most recently, Oscilloscope was updated on October 20, 2026 and Audio Spectrum Analyzer Pro on October 20, 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.*