# Tone generator

> Generate periodic signals, tune instruments, and test hearing with a versatile utility app. (iPhone/iPad app by michael heinz.)

- Source: https://appshunter.io/ios/app/tone-generator/id457003837 (this page in markdown: same URL + `.md`)
- Developer: [michael heinz](https://appshunter.io/developer/292745639)
- Category: Utilities, Medical
- Price: Free with in-app purchases
- Rating: 4.00/5 from 152 App Store ratings · 237 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 27 MB
- Languages: American English, French (France), German (Germany), Italian, Japanese, Korean, Russian, Chinese (Simplified, China), European Spanish
- Released: 2011-08-24
- Data updated: 2026-08-27
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/tone-generator/id457003837/reviews.md

## What is Tone generator?

Generate various periodic signals with different waveforms with adjustable frequency and amplitude. These are used to test electronic circuits such as amplifiers and filters. Also suitable for musicians to tune their instruments. As soon as a note sounds, the integrated tuner recognizes the pitch and displays the note name and deviation. For any instrument that produces an even tone. A metronome also helps you to practise.
Drive insects away or compare your hearing ability with your friends and relatives and share your results! Or watch others straining their ears to find the sounds that cannot locate you. Party fun is guaranteed!

optional features (Purchase):
- free of Ads
- manual frequency input
- support app functionality for connected Bluetooth devices, e.g. speaker
- different signals
- white/pink noise
- tuner for tuning instruments (real-time tone recognition C1-C8) with tuning whistle
- metronome for a steady tempo
- note/tone for frequency
- Left/right channel, stereo
- create a tone sequence for playing several different frequencies in particular time slot
- loop for tone sequence
- save and delete tone sequences
- load saved tone sequences
- send your tone sequence as an audio file (.caf format)
- option to compress audio files

Attention: If you want to share your results with others, first test your audible frequencies, then mark under the speakers your lowest audible tone and your highest audible tone (stored only temporarily). A small hint: the chart will show you what other frequencies of your age are still possible to reach.

## Key features

- Generate periodic signals
- Adjustable frequency and amplitude
- Integrated instrument tuner
- Metronome for practice
- Hearing ability tests
- Generate white/pink noise
- Create tone sequences

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Upgrade to full version | $3.99 | one-time |
| Extra-Feature 1 | $1.99 | one-time |
| No advertising | $1.99 | one-time |


## What do users think of Tone generator?

Overall sentiment: neutral

**Pros**

- 🚀 Works every time!
- 🚀 Awesome application for generating tones and studying sound
- 👍 Very useful
- 👍 Genius
- 👍 Great app to make your tones
- 👍 Excellent for testing hearing range and amusing dogs
- 👍 Does the job
- 👍 Great for testing your hearing range
- 👍 Perfect app for getting others on nerves with it's annoying sound
- 👍 Great for dancing oobleck
- 👍 Does what it should
- 👍 Great help for science fair project
- 👍 Works exactly as described
- 👍 Does what I need without having to use a computer

**Cons**

- 🐛 Doesn't go lower than 10hz
- 🔍 Ruined by ads
- 🔍 Way too many ads
- 🔍 Crashes before I can export even though I paid for the feature
- 🔍 Fake app. Buying the upgrade doesn't do anything. There is no support. You can't export like it says you can. It's a scam.
- 🔍 app is modified
- 🔍 Create an account to try out app? No thanks
- 🔍 Not accurate enough
- 🔍 Design flaws
- 🔍 Plays loud ad videos without warning
- 🔍 Full-screen ads and very limited functionality
- 🔍 Limited function, ruined by ads
- 🔍 To hard to adjust
- 🔍 full screen ads
- 🔍 Free is featureless
- 🔍 No tone
- 🔍 Frozen on my iPad
- 🔍 Doesn't produce any sound
- 🔍 No sound
- 🔍 Faulty
- 🔍 Do not download if you have sensitive ears
- 🔍 No sound

**Commonly reported bugs**

- Doesn't go lower than 10hz
- Crashes before I can export even though I paid for the feature
- Fake app. Buying the upgrade doesn't do anything. There is no support. You can't export like it says you can. It's a scam.
- app is modified
- No tone
- Frozen on my iPad
- Doesn't produce any sound
- No sound
- Faulty
- No sound

**Most requested features**

- Wish I had a manual  that explains a couple functions
- More precise way to select the frequency
- Playing of multiple tomes
- Manually enter a frequency
- More than one voice
- Dark mode option
- Advanced analytics dashboard

## Recent user reviews (10 of 237)

All indexed reviews: https://appshunter.io/ios/app/tone-generator/id457003837/reviews.md

### 1/5 — Ad scam

*2026-07-28, version 2.4*

Downloaded, tried to use it once and it sent me to an advertiser website. I deleted the app immediately. Useless.

### 1/5 — Nicht nutzbar ohne Zahlung

*2026-04-17*

Ich wollte die App gerade testen. Leier kann ich mit dem Schieberegler die gewünschte Frequenz nicht exakt einstellen. Eine manuelle Eingabe ist ohne Bezahlung nicht möglich. Für mich unbrauchbar. Wird gelöscht.

### 1/5 — Obnoxious and Annoying Pop up Ads

*2026-04-02, version 2.4*

Ads suddenly pop up and cover the whole screen with no options making the 20 Hz tone generator unusable.  Not like other App Ads that show up at the  bottom off the screen  and give you the option to skip Ad after 30 seconds or so if you are not interested. Terrible to use for short periods and definitely not conducive to encouraging anyone to upgrade.

### 1/5 — Ruined

*2026-03-26, version 2.4*

Used to be a nice stripped down utility. Now you’ve got to agree to ten different things before it will open, and if you set your privacy settings too high then oh no it just won’t let you use the app.

### 5/5 — Great app

*2026-03-17, version 2.4*

Works every time!

### 5/5 — Re: Tone Generator

*2026-02-14, version 2.4*

Awesome application for generating tones and studying sound.

### 1/5 — Doesn’t go lower than 10hz

*2025-12-24, version 2.4*

Doesn’t go lower than 10hz

### 5/5 — I’m happy with it

*2025-07-19, version 2.4*

Very useful

### 5/5 — 최고의 어플.

*2025-06-11*

잘쓰고있습니다

### 5/5 — Работает.

*2025-04-30*

Норма

## Frequently asked questions about Tone generator

### What does the tone generator app do?

This app generates various periodic signals with adjustable frequency and amplitude. These signals can be used for testing electronic circuits like amplifiers and filters, or by musicians for tuning instruments. It also includes a metronome and features for hearing tests.

### What are the key features of the tone generator app?

Key features include generating periodic signals with adjustable frequency and amplitude, a real-time instrument tuner that recognizes pitch and deviation, a metronome for steady tempo, and the ability to generate white/pink noise. Optional features include manual frequency input and the creation of tone sequences.

### Is the tone generator app free to use?

The app is free to download and use with basic functionalities. However, certain advanced features, such as ad removal, manual frequency input, Bluetooth device support, different signal types, and the full tuner functionality, are available through in-app purchases.

### What instruments can be tuned with this app?

The app's tuner is suitable for any instrument that produces an even tone. It offers real-time tone recognition for frequencies from C1 to C8, displaying the note name and its deviation from the correct pitch. A tuning whistle is also provided.

### How can I use the hearing test feature?

You can use the hearing test feature to compare your hearing ability with others. The app allows you to mark your lowest and highest audible tones. It also provides a chart showing what frequencies are typically audible for your age group, offering a fun way to explore sound perception.

## Version history (last 5 releases)

### 2.4 — 2023-12-18

- support app functionality for connected Bluetooth devices, e.g. speaker
- intern changes

### 2.3 — 2023-11-29

- intern changes
- add chromatic instrument tuner, pitch pipe and metronome as optional feature (Purchase)

### 2.2 — 2023-03-01

-intern changes in advertising

### 2.1 — 2022-10-12

- fix bug view new device sizes

### 2.0 — 2022-03-02

- fix errors
- more feature
- intern changes
- Apple IDFA consent for personalized ads

## Apps similar to Tone generator

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Tone Generator Speaker Cleaner](https://appshunter.io/ios/app/tone-generator-speaker-cleaner/id1671426872) | 3.6 (18) | Free | Utilities |
| [Frequency Sound Generator App](https://appshunter.io/ios/app/frequency-sound-generator-app/id1238160553) | 4.5 (4,832) | Free | Utilities |
| [Decibel X:dB Sound Level Meter](https://appshunter.io/ios/app/decibel-xdb-sound-level-meter/id448155923) | 4.6 (160,618) | Free | Utilities |
| [Frequency: Sound Generator](https://appshunter.io/ios/app/frequency-sound-generator/id6474342664) | 4.7 (340) | Free | Utilities |
| [Audio Function Generator](https://appshunter.io/ios/app/audio-function-generator/id768229610) | 4.7 (2,183) | Free | Utilities |
| [Sonic Pitch Sound Generator](https://appshunter.io/ios/app/sonic-pitch-sound-generator/id1187701748) | 4.5 (1,821) | Free | Utilities |

## More apps by michael heinz

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- [Situps 200+](https://appshunter.io/ios/app/situps-200-plus/id451202661)
- [Squats 200+](https://appshunter.io/ios/app/squats-200-plus/id451397287)

All apps by michael heinz: https://appshunter.io/developer/292745639

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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 2026-08-27.*