# Multiple Tone Generator — Sine, Triangle, Squire, Saw

> Multi-channel audio signal generator with adjustable waveforms, frequencies, and volumes. (iPhone/iPad app by Loop-Sessions.LLC..)

- Source: https://appshunter.io/ios/app/multiple-tone-generator/id954158579 (this page in markdown: same URL + `.md`)
- Developer: [Loop-Sessions.LLC.](https://appshunter.io/developer/414215366)
- Category: Music, Utilities
- Price: Free with in-app purchases
- Rating: 4.80/5 from 65 App Store ratings · 16 written reviews indexed
- Age rating: 4+
- Requires: iOS 16.0 · 4 MB
- Languages: American English, Japanese
- Released: 2015-01-11
- Data updated: 2026-08-25
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/multiple-tone-generator/id954158579/reviews.md

## What is Multiple Tone Generator?

This app generates the audio signal of multiple channels.
Supports 6 audio channels by default, upgradeable to 16 via in-app purchase.

[ Wave type ]
- There are four types of waveform. (Sine, Triangle, Squire, Saw)
- It can switch to the four types of each waveform by the wave type button.
- It can be set for each channel.
- It can change summarizes the waveforms of all channels with the bottom of the button.

[ Volume ]
- It can adjust the volume of each channel (Input) and change the mixer (Output) of all channels by the volume slider.
- It can be set OFF / ON the volume of each channel by mute button.

[ Frequency ]
- It can set the value of the frequency in 20Hz - 20000Hz.
- It can set the frequency value in the software keyboard by tapping the frequency label.
- It can set the frequency value at the corresponding slider to the logarithm.
- It can set the frequency value of -1 / + 1 octave from the current value by -1/+1 Octave button.
- It can adjust the frequency value slightly from the current value by -/+ button.

[ Preset ]
- It can set the frequency value of Guitar (E A D G B E), 6-string bass (B E A D G C) for Ch 1 ~ 6.

Guitar :
 Ch 1: E ( 82.4 Hz)
 Ch 2: A (110.0 Hz)
 Ch 3: D (146.8 Hz)
 Ch 4: G (196.0 Hz)
 Ch 5: B (246.9 Hz)
 Ch 6: E (329.6 Hz)

6-string bass (+ 1 octave) :
 Ch 1: B ( 61.7 Hz)
 Ch 2: E ( 82.4 Hz)
 Ch 3: A (110.0 Hz)
 Ch 4: D (146.8 Hz)
 Ch 5: G (196.0 Hz)
 Ch 6: C (262.0 Hz)

## Key features

- Multiple audio channels
- Adjustable waveforms (Sine, Triangle, Squire, Saw)
- Precise frequency control (20Hz - 20000Hz)
- Individual channel volume and mute
- Logarithmic frequency sliders
- Guitar and bass tuning presets

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Always remove banner ads. | $4.99 | one-time |
| Increase channels from 6 to 16 | $1.99 | one-time |


## Recent user reviews (10 of 16)

All indexed reviews: https://appshunter.io/ios/app/multiple-tone-generator/id954158579/reviews.md

### 5/5 — This is great

*2026-05-04*

Great for experimental electronic music

### 5/5 — Simples Empfehlenswertes Oscillator app

*2026-03-11*

Hat 6 verschiedene kanale die alle verschiedene lautstärke, wellenform, und frequenz. Es hat basics wie Gitarre frequenzen, und man kann bestimmte kanale stummen. Cooles app, toll gemacht

### 5/5 — Top App

*2026-03-04*

I like it

### 5/5 — Great app.

*2026-02-13*

Does everything it claims to. Plays multiple custom tones at once and not any annoying interruptions. I hope it nothing changes. I’d give it 6 stars

### 5/5 — Ch4

*2025-04-14*

Ch4

### 5/5 — Calming. Soothing.

*2024-10-16*

I listen to this often. It’s so relaxing and refreshing.

### 5/5 — Great app, need 7th frequency

*2024-08-27*

App works great need 7th frequency.
Thank you

**Developer response:** [Added]
New features have been added in Ver.2.0.0. Please check.


Thank you for your good comment.
I think it's a good idea.

In the next update, I'll make modifications to add even more frequencies. (I think they will be added through in-app purchases. Thank you for your understanding.)

It will take some time.

### 5/5 — very straight forward

*2023-12-09*

can even play specific decimal values for freq. like 40.05 Hz 
10.5/10

### 5/5 — Thankyou for this

*2023-01-23*

I appreciate how you did this for us 
Lots of love ❤️

### 5/5 — I love it!

*2022-12-09*

I love this app and everything about it! The ads are annoying, of course, but they don’t interfere with anything and you can always turn off Wi-Fi or cellular. But aside from that, this app is GREAT, easy to use, and has a simple UI!

## Frequently asked questions about Multiple Tone Generator

### What is the short name for Multiple Tone Generator?

The short name for Multiple Tone Generator is Multiple Tone Generator.

### How many audio channels does Multiple Tone Generator support?

Multiple Tone Generator supports 6 audio channels by default. This can be upgraded to 16 channels via an in-app purchase.

### What types of waveforms can Multiple Tone Generator produce?

Multiple Tone Generator can produce four types of waveforms: Sine, Triangle, Squire, and Saw. Each channel can be set to a different waveform type.

### Can I adjust the volume of individual channels in Multiple Tone Generator?

Yes, you can adjust the volume of each channel individually using a volume slider. You can also mute individual channels using the mute button.

### What is the supported frequency range for Multiple Tone Generator?

Multiple Tone Generator supports frequencies from 20Hz to 20000Hz. You can set the frequency using a software keyboard or logarithmic sliders.

### Does Multiple Tone Generator have ads?

Yes, Multiple Tone Generator contains advertisements.

### What are the preset tuning options available in Multiple Tone Generator?

Multiple Tone Generator offers presets for standard guitar tuning (E A D G B E) and 6-string bass tuning (+1 octave) for channels 1 through 6.

### Is Multiple Tone Generator available on all devices?

Multiple Tone Generator is available on iPhone and iPad, as indicated by the supported devices list.

## Version history (last 5 releases)

### 2.0.3 — 2026-03-04

Confirmed to work on iOS 26 and iPadOS 26.

### 2.0.2 — 2025-07-31

Fixed some minor processing.

### 2.0.1 — 2025-05-02

The app name has been changed.
("Multi Wave Oscillator" -> "Multiple Tone Generator")

### 2.0.0 — 2024-12-13

The number of available channels can be increased from the current 6 to 16. (In-app purchase required)

By purchasing an in-app purchase, the channel list will become scrollable and 16 channels will be available.

### 1.8.4 — 2024-07-31

The system has been updated.

## Apps similar to Multiple Tone Generator

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Tone Generator EM-1](https://appshunter.io/ios/app/tone-generator-em-1/id1609613195) | 4.4 (36) | Free | Music |
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| [MultiTone Generator](https://appshunter.io/ios/app/multitone-generator/id1161245288) | 4.6 (355) | Free | Music |
| [波動 Hysteric Oscillator](https://appshunter.io/ios/app/hysteric-oscillator/id1473229854) | 4.0 (7) | Free | Music |
| [MultiTone Generator PRO](https://appshunter.io/ios/app/multitone-generator-pro/id1143928697) | 4.9 (99) | $9.99 | Music |

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All apps by Loop-Sessions.LLC.: https://appshunter.io/developer/414215366

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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 2026-08-25.*