# Tone Generator — 正弦波・三角波・ノコギリ波・矩形波対応　生成ツール

> 正弦波・三角波・ノコギリ波・矩形波対応　生成ツール (iPhone/iPad app by Eiji Chiba.)

- Source: https://appshunter.io/ios/app/tone-generator/id6746802859 (this page in markdown: same URL + `.md`)
- Developer: [Eiji Chiba](https://appshunter.io/developer/1818574673)
- Category: Utilities, Music
- Price: Free
- Age rating: 4+
- Requires: iOS 17.6 · 5 MB
- Languages: American English, Japanese
- Released: 2025-06-10
- Data updated: 2026-01-19
- User reviews in markdown: https://appshunter.io/ios/app/tone-generator/id6746802859/reviews.md

## What is Tone Generator?

Tone Generator
Tone Generator is a versatile audio tool that generates accurate test signals with fully customizable frequency, volume, and panning settings.
It is designed for a wide range of applications, including acoustic calibration, audio equipment testing, and ear training.

Supported Waveforms
- Sine
- Triangle
- Sawtooth
- Square

Key Features
- Customizable Frequency: Precision control across the audible range (e.g., 20Hz – 20kHz).
- Volume Adjustment: Fine-tune the output level.
- Panning Control: Adjust the balance between Left (L) and Right (R) channels.
- Background Playback: Continues to run even when the app is in the background.
- Intuitive UI: A simple, user-friendly interface for seamless operation.

Common Use Cases
- Speaker & Headphone Testing: Evaluate the performance and range of your hardware.
- Hearing Sensitivity Checks: Verify your personal frequency response and hearing range.
- Audio Equipment Calibration: Ensure your gear is tuned and balanced correctly.
- Education & Training: A perfect tool for acoustic training and general audio education.


## Version history (last 4 releases)

### 1.3 — 2026-01-18

Add preset function

### 1.2 — 2025-06-22

English suport

### 1.1 — 2025-06-10

バックグランド再生に対応

### 1.0 — 2025-06-09

No release notes.

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## More apps by Eiji Chiba

- [ToneQuiz](https://appshunter.io/ios/app/tonequiz/id6752510280)

All apps by Eiji Chiba: https://appshunter.io/developer/1818574673

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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 2026-01-19.*