# Pitch Scope — Audio spectrum viewer

> Real-time audio spectrum analyzer for pitch, waveform, and frequency. (iPhone/iPad app by NOKKEUSI Inc..)

- Source: https://appshunter.io/ios/app/pitch-scope/id1499600383 (this page in markdown: same URL + `.md`)
- Developer: [NOKKEUSI Inc.](https://appshunter.io/developer/482532151)
- Category: Education, Music
- Price: $2.99
- Age rating: 4+
- Requires: iOS 17.6 · 4 MB
- Languages: English, Japanese
- Released: 2020-04-01
- Data updated: 2026-06-04
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/pitch-scope/id1499600383/reviews.md

## What is Pitch Scope?

The pitch scope app measures sound from the microphone and displays its pitch(frequency), waveform, and spectrum in real time.  Use this app to analyze voices and instrument sounds.

Why do vowels U O A E I sound like U O A E I? You can see and check the waveform and spectrum of each vowel. 
When you hear someone says “this guitar sounds brightly and that one sounds heavy”, what is the difference?  For such a question, you can check it with this app.

## Key features

- Real-time pitch measurement
- Waveform display
- Spectrum analysis
- Voice and instrument sound analysis
- Visual comparison of sounds

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/pitch-scope/id1499600383/reviews.md

### 2/5 — Nice but could be better

*2024-12-02*

Great to have a spectrum with labeled points. 
Would be really helpful to be able, after freezing the screen, to be able to drag a vertical line along the FFT which reports frequency and amplitude, and kind of snaps to peaks, or has a snap to peak option. 
That way the user can measure specific points. 
The automated pitch and amplitude graphs change much too fast. They should be stickier. Maybe always show the 8 dominant peaks, sorted by frequency. That way you’d be likely to still see a harmonic, even if it decayed faster than the fundamental. At the moment no peaks are measured under some amplitude value. That’s not ideal. Always show the first 8 regardless of amplitude.

**Developer response:** Thank you for your feedback very helpful to have specific and great suggestions for improvement.  We will work on improving the app.

## Frequently asked questions about Pitch Scope

### What is Pitch Scope?

Pitch Scope is an application that measures sound from your device's microphone and displays its pitch (frequency), waveform, and spectrum in real time. It allows users to analyze voices and instrument sounds visually.

### How does Pitch Scope help analyze sounds?

You can use Pitch Scope to see and check the waveform and spectrum of different sounds, like vowels or instrument tones. This helps in understanding the acoustic differences and characteristics of various audio inputs.

### What devices is Pitch Scope available on?

Pitch Scope is available for iPhone and iPad devices. It is designed to work with the built-in microphones of these devices.

### What is the age rating for Pitch Scope?

Pitch Scope has an age rating of 4+. This indicates it is suitable for children and adults, with no mature content.

### How often is Pitch Scope updated?

Pitch Scope was last updated on April 17, 2025, with version 1.13. This suggests regular updates to improve functionality and compatibility.

### Does Pitch Scope have ads?

No, Pitch Scope does not contain advertisements. As a paid application, it offers an uninterrupted user experience without any ad interruptions.

### What is the price of Pitch Scope?

Pitch Scope is a paid application priced at $2.99. This one-time purchase grants access to all its features.

### Can Pitch Scope be used for music learning?

Yes, Pitch Scope can be a valuable tool for music learning by allowing users to visualize and understand the frequencies and waveforms of musical instruments and vocal sounds.

## Version history (last 5 releases)

### 1.13 — 2025-04-17

Rebuilt for latest iOS version.

### 1.12 — 2022-01-16

Bug fix on Pitch detection

### 1.11 — 2020-11-13

Rebuilt for iOS 14
Improved operability when using an audio file as an input source

### 1.10 — 2020-08-24

Made the audio source selectable between the mic and an audio file.

### 1.01 — 2020-06-22

Bug fix on Pitch indicator

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## More apps by NOKKEUSI Inc.

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- [Choral Practice](https://appshunter.io/ios/app/choral-practice/id6748969439)

All apps by NOKKEUSI Inc.: https://appshunter.io/developer/482532151

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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 2026-06-04.*