# iAnalyzer

> Professional FFT-based audio signal analysis software for iOS devices. (iPhone/iPad app by 平 陈.)

- Source: https://appshunter.io/ios/app/ianalyzer/id335449113 (this page in markdown: same URL + `.md`)
- Developer: [平 陈](https://appshunter.io/developer/315130423)
- Category: Music, Utilities
- Price: Free with in-app purchases
- Rating: 4.20/5 from 74 App Store ratings · 36 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 3 MB
- Languages: American English
- Released: 2009-12-11
- Data updated: 2026-09-01
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/ianalyzer/id335449113/reviews.md

## What is iAnalyzer?

iAnalyzer is a FFT based professional software to analyze the audio signals for iPhone, iPod Touch and iPad. 
After 10 years of good sales all over the world, we are glad to see that iAnalyzer has gradually become the industry standard in audio analyze field, due to it's very high quality of course. This is definitely a Must Have app for every musician or sound engineer.
We also released the Mac version, you can download it from "Mac App Store".

Features:
-High performance software design for Real Time Analyzing(RTA) and complex graph displaying.
-Works on 44K sample rate, 20~20k Hz frequency output.
-FFT spectrum, Octave and 1/3 Octave result display.
-Colored curve depend on the dB value.
-Flex FFT size, 4K, 8K, or 16K.
-Reference Pressure configurable.
-2D or 3D or Mix 2D&3D display.
-History result display while in 3D mode.
-High precision peak frequency computation, average-error lower than 0.1%.
-Auto peak frequency tracing, up to 3 peaks can be displayed simultaneously and each one be linked from text to the graph clearly.
-Frequency to music scale converter, you can use iAnalyzer as a professional instrument tuner, or to test if any sound is tuneful.  
-Powerful synthesizer to allow you replay the audio with different speed, from 1/8 to 4x. With this feature, you can listen to your recoding very slowly. (Require iPhone 4S and later, iPad 2 and later which shipped with multiple cores processor.)
-VGA output support. Sync display on your device and extern screen. (iPhone 4, iPod touch 4 and iPad required)
-Current waveform display and summary waveform display.
-Record at any position and red color to mark the latest recording, unlimited recording time.
-Play back the recording.
-Oscope Auto-Scale: Enable you to view more details for low level signal.
-Snap to Peak: Find peak more easily while using measure line.
-File Manager: Recording in wave format, create new files, delete exist files, etc.
-Wifi Transfer and Data exporting: Download wav files with your browser, including screen shot, FFT result in txt file.

-Touch in the result area to use the measure line, bordered label means where is a peak.
-Move in the waveform area or touch on the bottom of the area to change the current position, iAnalyzer re-compute and update graph automatically. You can also change the position while playing.


Note:
-The internal mic of iPhone first generation can only works on 8K sample rate, you need head-set to achieve 44k. 
-Press "File" button to see the HTTP address, it is in the bottom of the window.
-For more information, Please visit http://phyar.cn .

How to Use:
-Touch and move in the result area with one finger to use the measure line.
-Touch and move in the result area with 3 fingers to rotate the 3D graph.
-Touch and move in the summary waveform area to move the current position.
-Tap in the scroll bar area(bottom of screen) to re-seek the current position.

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: http://phyar.cn/pp/

## Key features

- Real-time FFT spectrum analysis
- Octave and 1/3 Octave display
- High precision peak frequency computation
- Instrument tuner function
- Adjustable playback speed
- VGA output support
- Waveform display

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| iAnalyzer Pro (1 Year) | $29.99 | per year |
| iAnalyzer Pro (1 Month) | $4.99 | per month |


## Recent user reviews (10 of 36)

All indexed reviews: https://appshunter.io/ios/app/ianalyzer/id335449113/reviews.md

### 1/5 — Abzocke

*2024-11-26*

Ich schließe mich den anderen Rezensionen an. Auch ich habe nicht mehr den Umfang, den ich in der Pro Version gekauft habe

### 1/5 — Not working

*2024-04-03, version 5.5*

Doesn’t work

### 1/5 — Abo!

*2024-02-18*

Aus Vollversion wird Abo.

Wieder ein Entwickler, der den Hals nicht voll bekommt.

Schade, dass man den damaligen Kauf nicht rückgängig machen kann … sollte Apple mal einführen für so eine Abzocke!!

### 1/5 — Unverschämte Abo-Umstellung

*2024-01-29*

Die App an sich ist gut. Auch ich hatte damals die teure Pro Version gekauft. Nun wurde auf Abo umgestellt und der Kauf von damals ist weg.

### 1/5 — Disappointing deception

*2024-01-27*

After having paid for the app with full features in the pre “pro version” past I have lost features due to an “update” download.
I'm presently being extorted to pay for features I had paid for and have been deceived into losing.
Other than that…

### 1/5 — Unfaire Preispolitik

*2023-10-12*

Ich hab die hochpreisige App damals als Vollversion mit allen Features gekauft. Nach einem Update verlangt der Entwickler, das ich entweder ein Abo abschließe oder noch einmal 99€ bezahle, um die besagten Features nutzen zu können, für die ich bereits damals eine Menge Geld bezahlt habe. Ansonsten gab es keine nennenswerten Änderungen, die den immensen Aufpreis rechtfertigen würden.

### 3/5 — No audio ?

*2023-02-15*

After yrs of use, the audio has been disabled. How come ?

### 1/5 — Vollversion nicht mehr funktionsfähig

*2022-12-10*

Ich hab mal viel Geld für die Vollversion bezahlt - nun funktioniert diese nicht mehr, solange nicht auch noch ein Monats- oder Jahresabo bezahlt wird. Betrug!

### 2/5 — Great audio analysis tool

*2022-10-26*

To the developer, since the subscription, There is this strange notch filtering that won’t go away. The app is great when it’s working but this notch filtering renders it useless.

### 1/5 — Full version 사용하게 해줘요

*2022-09-22*

Full version 구매하여 사용중이였는데 이번 업데이트 후에 lite version(free) 처럼 바뀌었었어요.
Full version 구매 유저는 full version에서 사용할 수 있었던 기능들을 사용할 수 있게 업데이트 하여 주세요.

## Frequently asked questions about iAnalyzer

### What does iAnalyzer do?

iAnalyzer is a professional software application designed to analyze audio signals using Fast Fourier Transform (FFT) technology. It provides detailed insights into sound frequencies, spectrums, and waveforms, making it a powerful tool for audio professionals.

### What are the key features of iAnalyzer?

Key features include real-time spectrum analysis (RTA), FFT spectrum, Octave and 1/3 Octave displays, high-precision peak frequency computation, an instrument tuner function, and adjustable audio playback speed. It also supports VGA output for external displays.

### Is iAnalyzer free to use?

The application is available for free, but it offers in-app purchases. This suggests that while the core functionality may be accessible, certain advanced features or capabilities might require an additional purchase.

### What devices is iAnalyzer compatible with?

iAnalyzer is designed for iPhone, iPod Touch, and iPad. Specific features like the powerful synthesizer require iPhone 4S and later, or iPad 2 and later. VGA output support is available on iPhone 4, iPod touch 4, and iPad.

### How can iAnalyzer be used by musicians and sound engineers?

Musicians can use the instrument tuner feature to ensure their instruments are in tune and analyze the tunefulness of sounds. Sound engineers can leverage the real-time spectrum analysis and detailed waveform displays to diagnose audio issues, optimize sound systems, and understand acoustic environments.

## Version history (last 5 releases)

### 5.6 — 2024-09-25

Update for iOS 18.

### 5.5 — 2022-08-21

-Update to Pro Version.
-Minor bugs fixed.

### 5.3 — 2022-08-18

-Update to Pro Version.
-Minor bugs fixed.

### 5.0 — 2022-08-17

-Update to Pro Version.
-Minor bugs fixed.

### 3.5 — 2019-02-24

Update for iOS 12.

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## More apps by 平 陈

- [Pics](https://appshunter.io/ios/app/pics/id386097412)
- [PicsR](https://appshunter.io/ios/app/picsr/id849639355)
- [NumTouch](https://appshunter.io/ios/app/numtouch/id6742372587)

All apps by 平 陈: https://appshunter.io/developer/315130423

## Related topics

[ianalyzer](https://appshunter.io/ios/topics/ianalyzer)

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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 2026-09-01.*