# Audio Analyzer

> Real-time audio signal analysis with spectrum, spectrogram, oscilloscope, and RTA. (iPhone/iPad app by DEXUS Pawel Krzywdzinski.)

- Source: https://appshunter.io/ios/app/audio-analyzer/id681184981 (this page in markdown: same URL + `.md`)
- Developer: [DEXUS Pawel Krzywdzinski](https://appshunter.io/developer/377798036)
- Category: Music, Utilities
- Price: $9.99
- Rating: 4.40/5 from 40 App Store ratings · 42 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.4 · 3 MB
- Languages: American English
- Released: 2013-10-05
- Data updated: 2026-09-05
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/audio-analyzer/id681184981/reviews.md

## What is Audio Analyzer?

Audio Analyzer is a real-time spectrum, spectrogram, oscilloscope and octave RTA analyzer. It gives you a visual representation of an acoustic signal. It can be used to analyze the sounds of musical instruments, to identify spoken words phonetically, to measure the frequency response of audio equipment, or to picture the calls of different animals. You can also check “The Singer’s Formant”, the most important measure for every opera singer.

Features 

- Spectrogram analyzer (color, black and white) 
- Spectrum analyzer 
- Oscilloscope (full FFT window size) 
- Octave RTA analyzer: bands - full, 1/3, 1/6, 1/12 (RMS values) 
- SPL Meter (dBFS) 
- Recording trigger (triggered by frequencies in the specified frequency band)
- Fast real-time response 
- Sampling rates: 44.1kHz, 48kHz, 96kHz* 
- Fast Fourier Transform (FFT) 
- Window sizes: 256, 512, 1024, 2048, 4096, 8192, 16384, 32768, 65536
- Variable frequency resolution of the spectrogram
- Variable between FFT computations time interval (time resolution)
- Max/min Octave RTA values
- Zoom and pan all charts 
- Measure values in all charts 
- Play back analysis (just tap on the spectrogram and play) 
- PIP (picture-in-picture), allows the simultaneous analysis on the spectrogram chart and Second chart: Octave RTA, Spectrum or Oscilloscope 
- Audio input can be supplied via the built-in microphone, and an external microphone* (via the earphone jack, via the USB camera adapter, or through the iPhone/iPad dock connector – Core Audio compliant devices). External devices are shown in the application only when connected (e.g. external mic connected via the earphone jack)
- Sharing charts and audio recordings (through mail, social networks, clipboard) 
- Exporting to the iOS Document Browser (supports iCloud): audio recordings (wav) and image charts (png)
- Importing audio files from another application or from the iOS Document Browser (supports iCloud) 
- Many formats supported for audio file import
- Automatic conversion from other sampling rates for imported files 
- Frequency scale: linear and logarithmic 
- Amplitude scale: linear and logarithmic SPL/RMS (dBFS) 
- SPL meter weighting: dBZ - linear 


Make sure you use the latest iOS update.

*For 96kHz analysis use an external microphone with such capabilities through a USB camera adapter or through the iPhone/iPad dock connector (internal mic or external mic connected via the earphone jack can only be used for 44.1kHz or 48kHz analysis) You can also import files recorded on an external device.

## Key features

- Real-time spectrum analyzer
- Spectrogram analysis (color/B&W)
- Oscilloscope with full FFT window
- Octave RTA analyzer (various bands)
- SPL Meter (dBFS)
- Recording trigger
- Zoom and pan charts

## Chart rankings

- #139 in Top Paid · Music (US App Store)

## Recent user reviews (10 of 42)

All indexed reviews: https://appshunter.io/ios/app/audio-analyzer/id681184981/reviews.md

### 5/5 — Best iOS analyzer!

*2026-04-16*

Been using this analyzer on iPads and Phn professionally for years. Its dual ease of use and extreme accuracy makes it a no brainer.
For those not wanting or use Smarrt, it’s a win!

### 5/5 — Amazing app (only jealous people would dislike it and give it poor ratings).

*2026-04-15*

This is especially a great study tool for opera singers. 
It not only reveals technique imbalance in our own voices, but can help seek out credible role models to listen. 

Bonus: Holding our phone (with this app running) up against a speaker — through which a singer’s voice is heard — can help us analyze the quality of that singers voice technique.

(Live singing can also be analyzed, but one will need to be close to the source.)

I’m grateful for the creator for this app! 
I try my best to promote it via word of mouth… to colleagues, etc.

### 5/5 — Accurate, Smooth and Sophisticated

*2024-06-03*

Everything I was looking for in a Spectrograph app. Export, frequency checking, zooming and scrolling in time and frequency domains, plus all processing options. Love it.

### 3/5 — Good start but missing features

*2023-07-23*

I like to do measurements with a test CD on my turntable using my iPad.

Pros:
IPad is supported with Oscilloscope and Spectrum available. Also my attached RME ADI-2/4 audio interface that I use as Phono Preamp and ADC nicely works. Great that it supports the sample rate of 96kHz.

Cons:
Display of only one single channel of the stereo input and no simultaneous display of the right and left channel. This is true for Oscilloscope and Spectrum. So comparisons between both channels cannot be done easily.
Also missing a X/Y display that is vital for antiskating adjustment.
In Oscilloscope view of a sinus input signal the display is not triggered so no still standing Sinus can be seen.

Summary:
If the missing functionality would be available the price would be Ok for me. But with all the cons it was wasted money for me as I could not achieve what I had expected.

### 3/5 — Only 60seconds of a file

*2023-06-23*

I can only put 60 seconds in so if I have a 6 minute long mp3 file I can only view 60 seconds of it

### 5/5 — Great for singers

*2023-01-11*

This is a great app for singers who would like to improve their resonance. It allowed me to experiment with different vowel sounds from shaping my vocal tract in different ways to improve resonance.

### 3/5 — doesn't work with airpods pro

*2022-12-05*

very good possibilities to analyze, but no connection to the airpods pro with ipad pro M1 2021

### 4/5 — Good but crashing

*2022-07-11*

I love it but it crashes when I use the Octave RTA

### 5/5 — Solid app

*2022-06-05*

Tried a few spectrogram apps and this one is pretty solid. Lots of customization features.
Only small thing I would wish is that we can start replaying an audio file with the spectrogram completely scrolled back so that no one can anticipate what’s coming. But otherwise great job.

### 3/5 — Pretty would like some changes

*2021-11-17*

All most able to be my RTA in a live environment 

First for live use i would really like the Octave RTA to be even slower so if there’s a big bit of feed back that’s fast I can catch it.

I would like to move the PIP on the screen or do like a half and half have the spectrograph rotated 90 degrees and under the octave RTA, 

Also when selecting a band on the RTA I would like to set a option where it will disappear when I lift my finger off the screen 

If these features are added I would recommend this app to anyone other then that it’s pretty good for how much it costs and would like too a update with some added features :)

## Frequently asked questions about Audio Analyzer

### What does the Audio Analyzer app do?

Audio Analyzer provides real-time visual representations of acoustic signals. It functions as a spectrum analyzer, spectrogram, oscilloscope, and octave RTA analyzer, allowing users to analyze sounds in detail.

### What are the key features of Audio Analyzer?

Key features include a spectrogram analyzer, spectrum analyzer, oscilloscope, octave RTA analyzer with various band options, an SPL meter, and a recording trigger. It also supports zooming and panning on all charts and playback of analysis.

### How much does Audio Analyzer cost?

Based on the provided information, the application is a paid app. There are no mentions of in-app purchases or a subscription model, indicating a one-time purchase.

### What devices is Audio Analyzer compatible with?

The app is designed for iOS devices and requires the latest iOS update. It can utilize the built-in microphone or external microphones connected via the earphone jack, USB camera adapter, or dock connector.

### What are some common use cases for Audio Analyzer?

Users can analyze musical instrument sounds, identify spoken words phonetically, measure the frequency response of audio equipment, picture animal calls, and check specific vocal measurements like the 'Singer's Formant'.

## Version history (last 5 releases)

### 2.7 — 2020-03-16

- iOS 13 Dark Mode
- bug fixes

### 2.6 — 2017-09-23

- iOS 11, iPhone X ready
- Import and export audio recordings to and from the iOS 11 Document Browser (supports iCloud)

### 2.5 — 2016-09-21

- iOS 10 support
- musical note names

### 2.4 — 2016-05-11

- iPad Pro support
- fixed import issues

### 2.3 — 2015-07-17

- iPhone 6+ fixes
- other small fixes

## Apps similar to Audio Analyzer

| 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 |
| [Audio Spectrum Analyzer Pro](https://appshunter.io/ios/app/audio-spectrum-analyzer-pro/id1152352806) | 4.4 (238) | Free | Music |
| [Bass Tester & Booster Pro](https://appshunter.io/ios/app/bass-tester-and-booster-pro/id941024213) | 3.9 (225) | Free | Music |

## More apps by DEXUS Pawel Krzywdzinski

- [Ultrasonic Analyzer](https://appshunter.io/ios/app/ultrasonic-analyzer/id851069926)
- [Audio RTA](https://appshunter.io/ios/app/audio-rta/id861969994)

All apps by DEXUS Pawel Krzywdzinski: https://appshunter.io/developer/377798036

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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 2026-09-05.*