# Audio Spectrum Analyzer Pro — Sound Frequency Analysis

> Real-time audio analysis app with sound level meter and frequency analysis. (iPhone/iPad app by Vlad Polyanskiy.)

- Source: https://appshunter.io/ios/app/audio-spectrum-analyzer-pro/id1152352806 (this page in markdown: same URL + `.md`)
- Developer: [Vlad Polyanskiy](https://appshunter.io/developer/438646985)
- Category: Music, Utilities
- Price: Free with in-app purchases
- Rating: 4.40/5 from 238 App Store ratings · 183 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 40 MB
- Languages: Russian, Hindi, Vietnamese, American English, Mexican Spanish, Italian, Korean, German (Germany), European Portuguese, Chinese (Traditional, Taiwan) and 4 more
- Released: 2016-09-17
- Data updated: 2026-08-25
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/audio-spectrum-analyzer-pro/id1152352806/reviews.md

## What is Audio Spectrum Analyzer Pro?

Audio Spectrum Analyzer is a powerful real-time audio analysis app. 

Full of features yet very simple to use. Sound level meter (db meter a-weighted, noise rating, noise criterion) included.

Feature Highlights: 
• Octave Band Real Time Analyzer 
• FFT Plot (Fast Fourier Transform) 
• Linear and logarithm scales
• Up to 16384 FFT size 
• A lot of available window functions
• Tracking for max value
• Max and Min for any selected frequency
• Stunned graphics
• Reliable measurement accuracy with pre-calibrated profiles for 3 device-integrated mics
• Additional precision with integrated support and pre-calibrated profiles for AirPods, AirPods Pro
• Safer measurements using the Airpods Pro noise cancellation feature
• Support for external microphones (wired or via Bluetooth)
• Noise Rating and Noise Criterion support

And many many more...

Terms of Use: https://www.iubenda.com/terms-and-conditions/94359518

## Key features

- 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

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Premium Mode | $19.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Premium Pack | $29.99 | one-time |


## What do users think of Audio Spectrum Analyzer Pro?

Overall sentiment: mixed

**Pros**

- 👍 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
- 🎵 Identifies musical notes and frequencies
- ⚡ Responsive and real-time analysis
- 🛠️ Useful for sound engineering and audio setup
- 📱 Works well on both iPhone and iPad

**Cons**

- 💸 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
- 🔐 Excessive permissions requests (photo access)
- 🎚️ Limited microphone sensitivity controls
- 📊 Graph obscured by notch/dynamic island
- 🔊 Mutes device speaker volume when running
- ⏱️ Slow performance on some devices

**Commonly 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
- App won't uninstall properly
- Malware warnings appearing
- Help links and support pages broken/dead
- Incorrect dB level readings (off by ~20dB)
- Recording functions non-functional
- Half black screen in certain orientations

**Most requested features**

- Audio file upload capability
- White noise/test signal generator
- Microphone calibration file support
- Recording functionality with timestamp
- Multiple frequency cursors for comparison
- Ability to compare before/after curves
- Adjustable dB level zoom/scaling
- Saved settings and personalizations
- Audio Unit (AUV3) plugin support
- Peak hold reset button
- Time-domain recording in spectrograph mode

## Recent user reviews (10 of 183)

All indexed reviews: https://appshunter.io/ios/app/audio-spectrum-analyzer-pro/id1152352806/reviews.md

### 1/5 — Nag

*2026-02-22, version 3.1*

Can’t even try it for one session without sub nags every three minutes

### 5/5 — iOS 26 crash fixed

*2025-09-26*

Thanks

### 4/5 — It works again!

*2025-09-26*

Yay! A few weeks after the iOS 26 release, this app works again.

### 3/5 — Doesn’t work on iOS 26

*2025-09-24, version 3.0.2*

Doesn’t work on iOS 26

### 5/5 — IOS 26 Please <3

*2025-09-22*

Love the app, been using it for years. However, doesn’t work on IOS 26 yet (crashes on start up). Can’t wait to be able to use it again ;)

### 3/5 — App crash in ios26

*2025-09-22*

The app is constantly crashing with new update of ios26

### 2/5 — IOS26更新后打不开

*2025-09-22*

太坑了，希望能够尽快解决

### 1/5 — Scam

*2025-09-22*

Vor 2 Monaten gekauft, jetzt geht nix mehr, App stürzt ab beim öffnen. Danke vielmals !

### 1/5 — Not free anymore and Stopped working

*2025-09-20, version 3.0.2*

It was a great app and now it’s not working unless you subscribe! It’s not worth the price since there’s free apps the work similarly.

### 4/5 — ios 26 dùng kg dc

*2025-09-19, version 3.0.2*

ios 26 dùng kg dc

## Frequently asked questions about Audio Spectrum Analyzer Pro

### What does the Audio Spectrum Analyzer Pro app do?

This app provides powerful real-time audio analysis, allowing you to visualize sound frequencies. It includes features like an Octave Band Real Time Analyzer, FFT plots, and a sound level meter (dB meter).

### What are the key features of this audio analysis app?

Key features include Octave Band Real Time Analyzer, FFT Plot, linear and logarithm scales, up to 16384 FFT size, various window functions, max/min tracking for frequencies, and support for external microphones.

### Is this app free to use?

The app is free to download and use, but it offers in-app purchases. This means some advanced features or functionalities might require a purchase to unlock.

### What devices is this app compatible with?

The app is designed for mobile devices and supports integrated microphones, including pre-calibrated profiles for AirPods and AirPods Pro. It also supports external microphones via wired or Bluetooth connections.

### What are common use cases for an audio spectrum analyzer?

Common uses include analyzing room acoustics, troubleshooting audio equipment, monitoring noise levels in environments, checking the frequency response of instruments, and for sound design purposes.

## Version history (last 5 releases)

### 3.1 — 2025-09-24

• iOS 26 support
• Bugfixes

### 3.0.2 — 2023-02-03

• Stability & UI improvements

Do you like the new version of the app? Share your review on the App Store.
Do you dislike anything about it? All the more reason to say something!
Your comments help make the app better and I'm value them greatly so don't hesitate to share them.

### 3.0.1 — 2023-01-30

• Stability & UI improvements

Do you like the new version of the app? Share your review on the App Store.
Do you dislike anything about it? All the more reason to say something!
Your comments help make the app better and I'm value them greatly so don't hesitate to share them.

### 3.0 — 2022-12-05

• iOS 16 support
• iPhone 14, iPhone 14 Plus, iPhone 14 Pro and iPhone 14 Pro Max support

Do you like the new version of the app? Share your review on the App Store.
Do you dislike anything about it? All the more reason to say something!
Your comments help make the app better and I'm value them greatly so don't hesitate to share them.

### 2.0.1 — 2021-03-23

• Brand-new audio engine
• Reliable measurement accuracy with pre-calibrated profiles for 3 device-integrated mics
• Additional precision with integrated support and pre-calibrated profiles for AirPods, AirPods Pro
• Safer measurements using the Airpods Pro noise cancellation feature
• Support for external microphones (wired or via Bluetooth) 
• Noise Rating and Noise Criterion support

## Apps similar to Audio Spectrum Analyzer Pro

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Sound Decibel Meter-NIOSH,OSHA](https://appshunter.io/ios/app/sound-decibel-meter-nioshosha/id1571075296) | 4.5 (335) | Free | Music |
| [Spectrum Analyzer: Spectrogram](https://appshunter.io/ios/app/spectrum-analyzer-spectrogram/id981810895) | 4.2 (195) | Free | Music |
| [Audio Spectrum Analyzer dB RTA](https://appshunter.io/ios/app/audio-spectrum-analyzer-db-rta/id1281873790) | 4.5 (3,042) | Free | Music |
| [Decibel meter for personal use](https://appshunter.io/ios/app/decibel-meter-for-personal-use/id6448749318) | 4.5 (28) | Free | Music |
| [Bass Tester & Booster Pro](https://appshunter.io/ios/app/bass-tester-and-booster-pro/id941024213) | 3.9 (225) | Free | Music |
| [Audio / Spectrum Analyzer](https://appshunter.io/ios/app/audio-spectrum-analyzer/id1508848574) | 4.6 (1,000) | Free | Music |

## More apps by Vlad Polyanskiy

- [Light Meter - measure luminosity in lux, fc, lumen](https://appshunter.io/ios/app/light-meter-measure-luminosity-in-lux-fc-lumen/id642285909)
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- [dB Meter & Spectrum Analyzer](https://appshunter.io/ios/app/db-meter-and-spectrum-analyzer/id733773616)
- [Find a Cat](https://appshunter.io/ios/app/find-a-cat/id738257888)
- [Color Name AR Pro](https://appshunter.io/ios/app/color-name-ar-pro/id904152346)
- [Color Name AR](https://appshunter.io/ios/app/color-name-ar/id906955675)

All apps by Vlad Polyanskiy: https://appshunter.io/developer/438646985

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-25.*