# Audio Spectrum Monitor

> Real-time audio spectrum analyzer with music scale and pitch detection. (iPhone/iPad app by Tadao Yamaoka.)

- Source: https://appshunter.io/ios/app/audio-spectrum-monitor/id832421010 (this page in markdown: same URL + `.md`)
- Developer: [Tadao Yamaoka](https://appshunter.io/developer/832421013)
- Category: Music, Utilities
- Price: $0.99
- Age rating: 4+
- Requires: iOS 11.0 · 1 MB
- Languages: American English
- Released: 2014-03-10
- Data updated: 2026-09-07
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/audio-spectrum-monitor/id832421010/reviews.md

## What is Audio Spectrum Monitor?

It is an application program that in real time displays the spectrum of the voice input from your device's microphone. A horizontal axis is a music scale. 
A display position can be adjusted by dragging horizontally. 
Scaling of the display range of a scale can be carried out in pinch zoom operation.

[ feature ]
- The spectrum of the voice input from your device's microphone is in real time displayed.
- A horizontal axis is displayed by the music scale.
- Display 6 octaves from C2 to B7.
- It corresponds to a horizontal rotation of the screen.
- The basic frequency (pitch) is presumed and it displays it.
- It correspond to a drug and pinch zoom.
- Tuner
- Recording and playback
- Save/Load function
- Import/Export function

[ How to use ]
Please input the voice from your device's microphone. The spectrum is in real time displayed. It corresponds to a horizontal rotation. 

[ Pitch detection ]
When the pitch is presumed, a blue vertical line is displayed at the position of the music scale. 
Moreover, value (Hz) of the pitch and the music scale name are displayed in the top of the screen. 
When the voice contains two or more musical instruments and harmonies, it is not possible to analyze it correctly.

[ Recording and playback ]
Only 3 minute you can record.

## Key features

- Real-time spectrum display
- Music scale horizontal axis
- Pitch detection with visual indicator
- Tuner functionality
- 3-minute recording and playback
- Save/Load and Import/Export

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/audio-spectrum-monitor/id832421010/reviews.md

### 5/5 — すぐ起動して、見やすく、使いやすい

*2023-08-13*

素敵なアプリをありがとうございます。

自分の声の倍音を図(というんでしょうか？)で見てみたくて、アプリをダウンロードしました。使うたびに、こんなに一つの音にいろんな波長の音が入っているんだと感動します。

この手のアプリはほとんど使ったことなく、音声スペクトルの可視化アプリを３つくらい試しに使ってみたのですが、私は、こちらが一番シンプルで使いやすかったです。

安定して動作することも、とても嬉しいです。

## Frequently asked questions about Audio Spectrum Monitor

### What is Audio Spectrum Monitor used for?

Audio Spectrum Monitor displays the real-time spectrum of your device's microphone input, using a music scale for the horizontal axis. It also includes features like pitch detection, a tuner, and recording capabilities.

### How accurate is the pitch detection in Audio Spectrum Monitor?

When pitch is detected, a blue vertical line appears on the music scale, and the Hz value and scale name are displayed. The app notes that it may not correctly analyze audio with multiple instruments or harmonies.

### Can I record long audio clips with Audio Spectrum Monitor?

Audio Spectrum Monitor allows you to record audio, but recordings are limited to a maximum of 3 minutes in length.

### What devices does Audio Spectrum Monitor support?

Audio Spectrum Monitor is available for iPhone, iPad, and iPod devices.

### How often is Audio Spectrum Monitor updated?

The latest version, 1.2.0, was released on May 11, 2019. The app was originally released on March 10, 2014.

### What is the age rating for Audio Spectrum Monitor?

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

### Does Audio Spectrum Monitor have ads?

No, Audio Spectrum Monitor does not contain advertisements. It is a paid application.

### What is the price of Audio Spectrum Monitor?

Audio Spectrum Monitor is available for a one-time purchase of $0.99.

## Version history (last 5 releases)

### 1.2.0 — 2019-05-11

- Added import/export features

### 1.1.1 — 2015-10-13

- Fixed bug which reacts to noise
- Improved screen indication smoothly
- Extended time which can be recorded to 3 minutes

### 1.1.0 — 2015-09-22

- Added the recording and playback function
- Added save/load function
- Improved the analysis accuracy of pitch
- Add a setting screen

### 1.0.1 — 2014-03-25

- Analysis accuracy was improved. 
- It displayed smoothly. 
- bug fix

### 1.0 — 2014-03-10

No release notes.

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## More apps by Tadao Yamaoka

- [Vocal Pitch Monitor](https://appshunter.io/ios/app/vocal-pitch-monitor/id842218231)

All apps by Tadao Yamaoka: https://appshunter.io/developer/832421013

## Related topics

[viewpoint spectrum](https://appshunter.io/ios/topics/viewpoint-spectrum)

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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 2026-09-07.*