# Audio Frequency Analyzer vs nezu 3

The clearest difference is price: nezu 3 at Free against Audio Frequency Analyzer's $9.99. nezu 3 also leads on iOS requirement (12.0 vs 26.2). Audio Frequency Analyzer's advantage is review sentiment (60% vs 50%). On update cadence, ads, in-app purchases and device support there is nothing between them.

nezu 3 is free to download; Audio Frequency Analyzer costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Audio Frequency Analyzer ships an update every 8 months, nezu 3 every 7 months. The most recent releases landed on September 9, 2026 and September 3, 2026 respectively.

## The numbers

| Metric | Audio Frequency Analyzer | nezu 3 |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/audio-frequency-analyzer/id684641742/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | **60.0% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 7 months** |
| Monetization | Paid | **Free** |
| Size | 0 MB | 25 MB |
| Requires iOS | 26.2 | **12.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [TOON,LLC](https://appshunter.io/developer/633948723) | [SOLID SONIC K.K.](https://appshunter.io/developer/1767770689) |

## What reviewers say

### Audio Frequency Analyzer

[App page](https://appshunter.io/ios/app/audio-frequency-analyzer/id684641742)

This real-time audio analyzer measures and evaluates sound environments with 1/3 octave band frequency response and FFT analysis. It supports calibration for high accuracy and is suitable for various audio testing and tuning applications.

**Highlights:** Real-time frequency spectrum response measurement (1/3 octave, 30 bands), FFT Analyzer, Observation frequency range: 20 - 23000 Hz, Calibration function for high accuracy, Supports built-in and external microphones, Snapshot and averaging functions

**In-app purchases:** none


### nezu 3

[App page](https://appshunter.io/ios/app/nezu-3/id6673896884)

Control your Vibone nezu 3 device via Bluetooth to switch between hearing and audio modes. Adjust volume, noise reduction, and customize sound profiles with six frequency bands for a personalized listening experience.

**Highlights:** Bluetooth device connection, Switch hearing/Bluetooth modes, Adjust left/right earphone volume, Adjust noise reduction, Customize sound profiles, Six-band frequency adjustment

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

**In-app purchases:** none


## Frequently asked questions

### Is Audio Frequency Analyzer free?

Audio Frequency Analyzer costs $9.99, with no in-app purchases.

### Is nezu 3 free?

nezu 3 is free to download, with no in-app purchases.

### Do Audio Frequency Analyzer or nezu 3 have ads?

Neither Audio Frequency Analyzer nor nezu 3 shows ads.

### Which is updated more often, Audio Frequency Analyzer or nezu 3?

Audio Frequency Analyzer ships an update every 8 months, and nezu 3 every 7 months. Most recently, Audio Frequency Analyzer was updated on September 9, 2026 and nezu 3 on September 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.*