# Audio File Analyzer — Spectrum anly / Transcription

> Audio analysis tool displaying waveform, spectrum, and speech transcription. (iPhone/iPad app by Loop-Sessions.LLC..)

- Source: https://appshunter.io/ios/app/audio-file-analyzer/id6757920520 (this page in markdown: same URL + `.md`)
- Developer: [Loop-Sessions.LLC.](https://appshunter.io/developer/414215366)
- Category: Music, Utilities
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 17.0 · 6 MB
- Languages: American English, Japanese
- Released: 2026-07-21
- Data updated: 2026-09-08
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/audio-file-analyzer/id6757920520/reviews.md

## What is Audio File Analyzer?

This app supports simultaneous display of the "audio waveform" and the FFT-based "amplitude spectrum" (frequency magnitude) for audio files on your device.
(FFT: Fast Fourier Transform)
You can check the frequency components around the current playback position while playing the file.

[Features]
- Simultaneous display of audio waveform and a real-time spectrum linked to the playback position.
- Supports both portrait and landscape orientation.
- Channel display switching (Mix / L / R).
- Displays the peak level of the spectrum and its frequency.
- Supports zooming in the frequency direction of the spectrum.
- Pitch meter display.
- Supports transcription (iOS 26 ~).

The Pro version offers Ad-Free Viewing and High-Resolution Analysis (FFT size: 16384).

[Spectrum Display Settings]
- Frequency Axis: Linear, Log
- FFT Size: 1024, 2048, 4096, 8192, 16384 (* 16384 is available in the Pro version)
- Window Function: Hann, Hamm, Blkman, None
- Octave Analysis: FFT, 1/12, 1/6, 1/3, 1, Calc Method: Max, Ave

[Transcription screen] (* Available on iOS 26 or later.)
Transcribes speech in the selected audio file.
The results are divided into recognized speech segments and displayed in cells with their start times.
Tap a cell to move to that position.

## Key features

- Simultaneous waveform and spectrum display
- Real-time frequency analysis
- Speech transcription
- Channel switching (Mix/L/R)
- Spectrum zooming
- Pitch meter display

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Pro (Remove ads, High-Res analysis) | $10.99 | one-time |



## Frequently asked questions about Audio File Analyzer

### What is Audio File Analyzer?

Audio File Analyzer is a tool that displays the audio waveform and FFT-based amplitude spectrum for audio files on your device. It allows you to check frequency components in real-time during playback and offers speech transcription capabilities.

### Does Audio File Analyzer have ads?

Yes, Audio File Analyzer contains advertisements. An ad-free experience is available through the Pro version.

### What devices does Audio File Analyzer support?

Audio File Analyzer is available for iPhone and iPad devices.

### How does the transcription feature work in Audio File Analyzer?

The transcription feature, available on iOS 26 or later, converts speech within selected audio files into text. Results are segmented with start times, allowing you to tap and navigate to specific points in the audio.

### What are the spectrum display settings in Audio File Analyzer?

Users can customize spectrum display settings including frequency axis (Linear, Log), FFT size (up to 16384 in Pro), window function (Hann, Hamm, Blkman, None), and octave analysis methods.

### What is the Pro version of Audio File Analyzer?

The Pro version of Audio File Analyzer offers an ad-free viewing experience and high-resolution analysis with an FFT size of 16384.

### How often is Audio File Analyzer updated?

The latest version of Audio File Analyzer is 1.1.1, last updated on September 5, 2026. The release date was July 21, 2026.

### What is the age rating for Audio File Analyzer?

Audio File Analyzer has an age rating of 4+, making it suitable for a wide range of users.

## Version history (last 5 releases)

### 1.1.1 — 2026-09-05

- Added a feature to display dB and frequency values ​​at the tapped location in the spectrum view.
- Added a “1/24 octave” option to octave analysis.

### 1.1.0 — 2026-08-06

Added a transcription feature. (* Available on iOS 26 or later.)

It recognizes speech and displays it as text.
The results are divided into speech segments and displayed with their start times.

### 1.0.2 — 2026-07-30

Supports pitch meter display.

### 1.0.1 — 2026-07-27

Added support for saving and restoring analysis settings (frequency scale, FFT size, window function, octave analysis).

### 1.0.0 — 2026-07-21

No release notes.

## More apps by Loop-Sessions.LLC.

- [Metronome with Player](https://appshunter.io/ios/app/metronome-with-player/id438914987)
- [Kishino Style](https://appshunter.io/ios/app/kishino-style/id460355477)
- [Yoshida's Speak](https://appshunter.io/ios/app/yoshidas-speak/id468650122)
- [Soutou's Speak](https://appshunter.io/ios/app/soutous-speak/id487660107)
- [鷹の爪スタンプ](https://appshunter.io/ios/app/id579665838)
- [鷹の爪スタンプLite](https://appshunter.io/ios/app/lite/id579668660)

All apps by Loop-Sessions.LLC.: https://appshunter.io/developer/414215366

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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 2026-09-08.*