# Oscillator — Simple Oscillator

> Simple audio generator with four waveforms for testing and music. (iPhone/iPad app by Masayuki Akamatsu.)

- Source: https://appshunter.io/ios/app/oscillator/id287657331 (this page in markdown: same URL + `.md`)
- Developer: [Masayuki Akamatsu](https://appshunter.io/developer/284722836)
- Category: Music, Utilities
- Price: $0.99
- Rating: 3.70/5 from 3 App Store ratings · 49 written reviews indexed
- Age rating: +4
- Requires: iOS 15.0 · 1 MB
- Languages: American English
- Released: 2019-02-11
- Data updated: 2026-08-13
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/oscillator/id287657331/reviews.md

## What is Oscillator?

Oscillator is a simple and rough audio generator application which has the following functions. You can use it as a test tone and play it as a strange musical instrument.

- Four waveforms. (i.e. sine wave, square wave, saw wave and white noise.)
- Exponential Frequency control using the slider.
- Frequency numeric input using the software keyboard.
- Equal distance panning control using the slider.
- dB style amplitude control using the slider.
- Sound output on/off button.
- All sliders and buttons are multi-touch controlled.

Please note the limitations below before you purchase/use this application.

- The frequency control is not effective with the white noise oscillator.
- The panning control is not effective with an iPhone internal speaker because it is monophonic. Use headphones or stereo speakers.
- The audio output might be interrupted on a keyboard input, a view change and so on.
- The accuracy of the audio output is not very high but it is reasonable.

## Key features

- Four waveforms (sine, square, saw, white noise)
- Exponential frequency control
- Numeric frequency input
- Panning control
- Amplitude control
- Multi-touch controls

## Recent user reviews (10 of 49)

All indexed reviews: https://appshunter.io/ios/app/oscillator/id287657331/reviews.md

### 1/5 — The worst

*2025-05-29*

Didn’t even output any sound. I’ve seen the same complaints as others. Really should be a 0 out of 5

### 1/5 — Doesnt work.

*2025-02-22*

This app does not work at all. I think it is just a scam to steal $1 from you. Do not download.

### 1/5 — Poof

*2025-02-12*

Didn’t make a sound :(

### 5/5 — Works great.

*2017-11-27*

Always been a great app.  Works flawlessly for me.

### 5/5 — Perfect!

*2012-07-29*

I love the app's simple interface and many options. I do wish for a triangle wave option, though.

### 5/5 — Test

*2011-04-21, version 0*

Un ottimo programma per testare l'impianto audio,
E per controllare la risposta dell'ambiente.
Fa quello che promette.

### 4/5 — Not bad

*2011-02-28, version 0*

Not a bad app would like to see duty cycles and periods in the future though

### 5/5 — Gut

*2010-12-28*

Ein einfaches Programm dem aber an nichts mangelt außer vielleicht Multitasking unterstützung... Aber so auch schon 5 Sterne wert.

### 5/5 — Semplice e funzionale

*2010-10-30, version 0*

Ottimo, utilizzato come generatore di tono per allineare un trasmettitore. Semplice ed efficace.

### 5/5 — Great App.

*2010-04-18*

This app has been a great resource for me to calibrate some of our equipment. The only thing I would request is that field for the volume be editable as well so thats it is easy to set some known values.
Otherwise thanks heaps!

## Frequently asked questions about Oscillator

### What does this app do?

This application generates simple audio tones using four different waveforms: sine, square, saw, and white noise. You can use it for audio testing or as a basic musical instrument for experimental sounds. It offers controls for frequency, panning, and amplitude.

### What are the key features of this audio generator?

Key features include four distinct waveforms, exponential frequency control via slider and numeric input, equal distance panning control, dB-style amplitude control, and a sound output on/off button. All sliders and buttons support multi-touch.

### How much does this app cost?

The application is a paid app. There are no in-app purchases or advertisements mentioned, indicating a one-time purchase for full functionality.

### What are the limitations of this app?

Frequency control is not effective with white noise. Panning may not work with internal iPhone speakers due to monophonic output; headphones or stereo speakers are recommended. Audio output might be interrupted by system events like keyboard input or view changes. Audio output accuracy is reasonable but not extremely high.

### Who would find this app useful?

This app is useful for individuals who need a simple tool for generating test tones, such as audio engineers or developers. It can also be used by musicians or sound designers looking for a basic sound generator for experimental music or sound design purposes.

## Version history (last 5 releases)

### 2.0.2 — 2026-07-18

Minor bugs have been fixed.

### 2.0.1 — 2024-01-30

Updated for the latest OS.

### 2.0.0 — 2015-10-07

This app has been updated by Apple to display the Apple Watch app icon.

- iOS 9 compatible
- New randomize function

### 1.1.1 — 2008-11-19

Upside-down portrait mode was added for efficient use of speaker.

### 1.1 — 2008-10-29

No release notes.

## Apps similar to Oscillator

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| [METRO_PAD](https://appshunter.io/ios/app/metro-pad/id6748433223) | — | $2.99 | Music |
| [OscDrax](https://appshunter.io/ios/app/oscdrax/id6752560876) | 4.0 (1) | $0.49 | Music |
| [Handy Harp II](https://appshunter.io/ios/app/handy-harp-ii/id6755714173) | — | $39.99 | Music |

## More apps by Masayuki Akamatsu

- [Yes\|No Free](https://appshunter.io/ios/app/yesno-free/id284722833)
- [Alarm Free](https://appshunter.io/ios/app/alarm-free/id284728433)
- [Compass Free](https://appshunter.io/ios/app/compass-free/id284735786)
- [picocalc](https://appshunter.io/ios/app/picocalc/id284740333)
- [Gengou Lib](https://appshunter.io/ios/app/gengou-lib/id284830543)
- [T4Two](https://appshunter.io/ios/app/t4two/id284910005)

All apps by Masayuki Akamatsu: https://appshunter.io/developer/284722836

## Related topics

[oscillator](https://appshunter.io/ios/topics/oscillator) · [the oscillator](https://appshunter.io/ios/topics/the-oscillator)

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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 2026-08-13.*