# Audio Kit vs Audio Spectrum Analyzer Pro

The clearest difference is price: Audio Spectrum Analyzer Pro at Free against Audio Kit's $2.99. Audio Spectrum Analyzer Pro also leads on rating (4.4 vs 3.5) and ratings volume (238 vs 6). Audio Kit's advantage is review sentiment (76% vs 57%). On update cadence, ads, in-app purchases and monetization model there is nothing between them.

Audio Spectrum Analyzer Pro is free to download; Audio Kit costs $2.99 up front. Audio Kit sells 1 one-off in-app purchase and Audio Spectrum Analyzer Pro sells 2 in-app purchases, starting at $19.99 per year. Whichever you choose, the download price is not the number that matters.

Audio Spectrum Analyzer Pro holds the better App Store score, 4.4 against 3.5. That said, the two scores are not equally well evidenced: Audio Spectrum Analyzer Pro has 238 ratings behind it against 6, so its average is the more settled of the two. Written reviews complicate that: 76% of Audio Kit'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.

Audio Kit ships an update every 6 months, Audio Spectrum Analyzer Pro every 7 months. The most recent releases landed on October 18, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Audio Kit | Audio Spectrum Analyzer Pro |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [3.5 (6 ratings)](https://appshunter.io/ios/app/audio-kit/id376965050/reviews) | **[4.4 (238 ratings)](https://appshunter.io/ios/app/audio-spectrum-analyzer-pro/id1152352806/reviews)** |
| Number of ratings | 6 | **238** |
| Positive reviews | **76.3% of reviews** | 57.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 7 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 2 MB | 40 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sinusoid Pty Ltd](https://appshunter.io/developer/364871696) | [Vlad Polyanskiy](https://appshunter.io/developer/438646985) |

## What reviewers say

### Audio Kit

[App page](https://appshunter.io/ios/app/audio-kit/id376965050)

This app provides four essential audio analysis tools: a real-time spectrum analyzer, a waveform scope, an SPL meter, and a signal generator. It helps audio professionals visualize and measure sound characteristics with detailed controls and calibration options.

**Highlights:** Real-time Spectrum Analyzer, Waveform Scope, SPL Meter with A-weighting, Signal Generator (Sine, White, Pink Noise), Sweep Generation (In-App Purchase), Screen Capture

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sweep Generator for Audio Kit | $1.99 | one-time |


### 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 Audio Kit free?

Audio Kit costs $2.99, and also offers 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, Audio Kit or Audio Spectrum Analyzer Pro?

Audio Spectrum Analyzer Pro is rated higher. Audio Kit averages 3.5 out of 5 from 6 ratings, while Audio Spectrum Analyzer Pro averages 4.4 from 238 ratings.

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

Neither Audio Kit nor Audio Spectrum Analyzer Pro shows ads.

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

Audio Kit ships an update every 6 months, and Audio Spectrum Analyzer Pro every 7 months. Most recently, Audio Kit was updated on October 18, 2026 and Audio Spectrum Analyzer Pro on October 15, 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.*