# Tone Scope Lab — Real-Time Tuner & Spectrum

> Real-Time Tuner & Spectrum (iPhone/iPad app by Yosuke Ouchi.)

- Source: https://appshunter.io/ios/app/tone-scope-lab/id6780329595 (this page in markdown: same URL + `.md`)
- Developer: [Yosuke Ouchi](https://appshunter.io/developer/1877354991)
- Category: Music, Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 25 MB
- Languages: American English
- Released: 2026-06-24
- Data updated: 2026-09-01
- User reviews in markdown: https://appshunter.io/ios/app/tone-scope-lab/id6780329595/reviews.md

## What is Tone Scope Lab?

Tone Scope Lab is a real-time tuner and spectrum analysis tool designed for musicians who want to see pitch, not just read a number.

At the center of Tone Scope Lab is its infinite circular pitch ruler, which provides a continuous visual view of pitch movement while you play.

Real-time spectrum visualization lets you see the frequency components of your instrument’s sound, providing another visual perspective alongside the pitch ruler.

The Transpose Ruler provides a quick visual reference for transposing instruments, helping you relate written and sounding pitches at a glance.

Choose from three generations of analysis and display systems:

• Gen-1 — a simple and direct tuning view
• Gen-2 — enhanced analysis and visualization
• Gen-3 — the latest generation, combining multiple stages of analysis for more focused pitch detection

Tone Scope Lab also supports instrument presets. The built-in General preset provides flexible, all-purpose tuning, while additional instrument presets can be downloaded for more focused analysis ranges.

Features:

• Real-time pitch detection
• Infinite circular pitch ruler
• Real-time spectrum visualization
• Transpose Ruler for transposing instruments
• Frequency display
• Three generations of analysis and display
• Instrument presets
• Downloadable additional presets
• Adjustable spectrum display modes
• Designed for instrument practice, tuning, and sound observation

Tone Scope Lab is designed to make pitch behavior visible — from a simple tuning reference to a deeper view of how your instrument’s sound behaves.


## Version history (last 4 releases)

### 3.1.0 — 2026-08-23

Tone Scope Lab 3.1 introduces the latest third-generation analysis and display system.

• New Gen-3 analysis and visualization
• Gen-1 and Gen-2 remain available for different tuning needs
• New instrument preset system
• Downloadable presets for different instruments
• Improved pitch detection and visual feedback
• Various display and stability improvements

Choose the generation and instrument preset that best suits your instrument and tuning environment.

### 2.0 — 2026-06-30

• Improved circular pitch ruler responsiveness.
• Smoothed spectrum display behavior.
• Added Noise Tolerance and Spin Speed settings.
• Added lock screen widget support for quick launch.
• Improved stability and overall performance.

### 1.3 — 2026-06-26

Version 1.3

- Added banner ad support.
- Fixed a microphone startup issue on iOS.
- Improved landscape orientation behavior.

### 1.2 — 2026-06-24

No release notes.

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## More apps by Yosuke Ouchi

- [雀の羽算用](https://appshunter.io/ios/app/id6759349965)
- [Flute Fingering Lab](https://appshunter.io/ios/app/flute-fingering-lab/id6760796331)
- [OHAKO](https://appshunter.io/ios/app/ohako/id6770323175)
- [Shopping Lab](https://appshunter.io/ios/app/shopping-lab/id6795604982)

All apps by Yosuke Ouchi: https://appshunter.io/developer/1877354991

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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.*