# Multiple Tone Gen — Simultaneous generation Tool

> Simultaneous generation Tool (iPhone/iPad app by Eiji Chiba.)

- Source: https://appshunter.io/ios/app/multiple-tone-gen/id6755821745 (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 18.2 · 6 MB
- Languages: American English, Japanese
- Released: 2025-11-29
- Data updated: 2026-08-06
- User reviews in markdown: https://appshunter.io/ios/app/multiple-tone-gen/id6755821745/reviews.md

## What is Multiple Tone Gen?

MultiToneGenerator is an audio tool capable of generating precise test signals with customizable frequency, volume, and panning settings.
It allows you to combine multiple waveforms and play them simultaneously.
Configure up to 10 separate tones.
Suitable for a wide range of applications, including acoustic tuning, audio equipment testing, and listening training.

[Supported Waveforms]
- Sine wave
- Triangle wave
- Sawtooth wave
- Square wave

[Key Features]
- Frequency specification (e.g., 20Hz–20kHz)
- Volume adjustment
- Panning settings (Left to Right)
- Background playback
- Simple, intuitive UI

[Use Cases]
- Testing speakers and headphones
- Checking hearing sensitivity across frequencies
- Calibrating audio equipment
- Audio training and educational purposes


## Version history (last 3 releases)

### 1.2 — 2026-08-03

■ Preset Save & Load Feature
You can now save your current tone configurations (waveform, frequency, volume, and pan) with a custom name and load them instantly. 
To get you started right away, we have prepared 5 handy default presets:
- Standard Pitch (A440 tuning fork)
- Stereo L/R Test
- C Major Triad
- Binaural Beats (4Hz entrainment)
- Mosquito Tone (15kHz)

### 1.1 — 2026-08-02

English Support

### 1.0 — 2025-11-29

No release notes.

## More apps by Eiji Chiba

- [Tone Generator](https://appshunter.io/ios/app/tone-generator/id6746802859)
- [ToneQuiz](https://appshunter.io/ios/app/tonequiz/id6752510280)
- [My Routine Scheduler](https://appshunter.io/ios/app/my-routine-scheduler/id6774161641)

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 2026-08-06.*