# Tone Generator+ Freq — Sine Wave Sound Maker

> Audio tone generator for sine, square, sawtooth, and triangle waveforms. (iPhone/iPad app by Kyu-Hee Jang.)

- Source: https://appshunter.io/ios/app/tone-generator-plus-freq/id6760830690 (this page in markdown: same URL + `.md`)
- Developer: [Kyu-Hee Jang](https://appshunter.io/developer/1587578867)
- Category: Utilities, Productivity
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 17+
- Requires: iOS 17.0 · 69 MB
- Languages: American English
- Released: 2026-03-26
- Data updated: 2026-09-01
- Monetization: ad-supported
- User reviews in markdown: https://appshunter.io/ios/app/tone-generator-plus-freq/id6760830690/reviews.md

## What is Tone Generator+ Freq?

Tone Generator+ Freq produces precise audio tones from 1 Hz to 22 kHz. Sine, square, sawtooth, triangle, and noise for testing, calibration, and experiments.

Set frequency with the dial or type the exact Hz. Built-in instrument tuner reads pitch in cents. Layer up to four tones in the mixer. Presets include tinnitus mask, sleep, dog whistle, cat repel, brainwave beats, and solfeggio.

Sweep between two frequencies, or play mono, stereo, binaural, and isochronic channels. Start quiet — loud tones can damage hearing and speakers.

Clean, glitch-free output through the iPhone speaker or a connected output.

## Key features

- Precise frequency generation
- Multiple waveform types (sine, square, sawtooth, triangle)
- Adjustable volume control
- Full audible range support (20 Hz - 20,000 Hz)
- Clean and stable audio output
- Simple user interface


## Frequently asked questions about Tone Generator+ Freq

### What is Tone Generator+ Freq used for?

Tone Generator+ Freq is used to produce precise audio tones with various waveforms. It's ideal for tasks like speaker testing, audio equipment calibration, musical instrument tuning, and scientific experiments.

### What types of waveforms can Tone Generator+ Freq create?

Tone Generator+ Freq can generate sine, square, sawtooth, and triangle waveforms. This variety allows for diverse audio testing and experimental needs.

### What is the frequency range supported by Tone Generator+ Freq?

The app supports the full audible range, from 20 Hz to 20,000 Hz. This ensures it can be used for a wide spectrum of audio applications.

### Does Tone Generator+ Freq have ads?

Yes, Tone Generator+ Freq contains advertisements. As a free utility, ads help support its development and maintenance.

### What devices is Tone Generator+ Freq compatible with?

Tone Generator+ Freq is designed for iPhone and iPod devices. It requires iOS 17.0 or later.

### How often is Tone Generator+ Freq updated?

The latest version, 1.0.14, was released on June 20, 2026. Updates are released periodically to improve functionality and stability.

### What is the age rating for Tone Generator+ Freq?

Tone Generator+ Freq has an age rating of 17+. This is likely due to the nature of its utility and potential advanced applications.

### Can I adjust the volume of the generated tones?

Yes, you can adjust the volume of the generated audio signals within the app. This provides control over the output level for your specific use case.

## Version history (last 5 releases)

### 1.0.26 — 2026-08-30

Store screenshots now show the 1 Hz–22 kHz tone panel, the instrument tuner, and the in-app guide in 30 languages.

### 1.0.25 — 2026-08-07

The tone now keeps playing when you leave the app. Start a masking tone and switch to your browser or mail — it stays on. Requested in a review by someone using it for tinnitus; thank you.

### 1.0.23 — 2026-08-03

Thanks for using our app! This update brings behind-the-scenes performance and stability improvements for a smoother, more reliable experience. Your support means the world to us.

### 1.0.22 — 2026-07-30

Thanks for using our app! This update brings behind-the-scenes performance and stability improvements for a smoother, more reliable experience. Your support means the world to us.

### 1.0.21 — 2026-07-28

Thanks for using our app! This update brings behind-the-scenes performance and stability improvements for a smoother, more reliable experience. Your support means the world to us.

## Apps similar to Tone Generator+ Freq

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Frequency Generator - Hz Sound](https://appshunter.io/ios/app/frequency-generator-hz-sound/id6759500217) | 4.8 (4) | Free | Utilities |
| [PAcalculate](https://appshunter.io/ios/app/pacalculate/id793460437) | 5.0 (7) | Free | Utilities |
| [Tone generator](https://appshunter.io/ios/app/tone-generator/id457003837) | 4.0 (152) | Free | Utilities |
| [Signals Generator](https://appshunter.io/ios/app/signals-generator/id1526653387) | 4.7 (28) | Free | Utilities |
| [Frequency Gen](https://appshunter.io/ios/app/frequency-gen/id6758956523) | — | Free | Utilities |
| [Freq'n Awesome Tone Generator](https://appshunter.io/ios/app/freqn-awesome-tone-generator/id6753634359) | — | Free | Utilities |

## More apps by Kyu-Hee Jang

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- [Barometer: Air Pressure](https://appshunter.io/ios/app/barometer-air-pressure/id6759883097)

All apps by Kyu-Hee Jang: https://appshunter.io/developer/1587578867

## Related topics

[audio test tone generator](https://appshunter.io/ios/topics/audio-test-tone-generator)

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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.*