# iTuningFork - Tone Generator — Waveform synthesizer

> Waveform synthesizer for instrument tuning and electronic equipment testing. (iPhone/iPad app by Gianluca Natalini.)

- Source: https://appshunter.io/ios/app/ituningfork-tone-generator/id600001658 (this page in markdown: same URL + `.md`)
- Developer: [Gianluca Natalini](https://appshunter.io/developer/348380792)
- Category: Music, Utilities
- Price: $1.99
- Rating: 1.60/5 from 5 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 16.6 · 3 MB
- Languages: American English
- Released: 2013-02-13
- Data updated: 2026-08-16
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/ituningfork-tone-generator/id600001658/reviews.md

## What is iTuningFork?

"iTuningFork - Tone Generator" is a tone generator (signal generator) for tuning musical instruments or for testing electronic equipments.
The signal generator is an electrical / electronic device capable of generating an electrical signal with waveforms types and frequencies selectable by the user.

Music industry:
"ITuningFork - Tone Generator" works like a tuning fork.
The program preset tones, different for each type of instrument, simplify the operations required for tuning musical instruments.
You have to select the musical instrument you want to tune and "iTuningFork - Tone Generator" will automatically generate the full tone scale for the selected musical instrument.
You can play the single key/tone/note, or you can "Play Loop" to activate all the preset tones in sequence for the selected instrument. In this case, the "Timeout" setting determines the duration of each tone in the automatic sequence of tones for the selected musical instrument.
Volume and timbre can also be edited while playing a tone; you can thus obtain special effects of shifting the tone frequency in real time.
Volume control allows you to adjust the exact audio intensity for the playing tone and allow you to tune your music instrument more easily.
The “Notes Duration” controls allow you to decide whether the notes should only be played until the button is pressed or continuously until you press "Stop", or with a fixed timeout adjustable in seconds.
It is also available the 9-octave tones keyboard for each waveform selected to play the desired note.

Electronic industry:
Signals generators are typically used in three ways:
- in the testing of electrical and electronic circuits
- as a process control device
- as a sample instrument
Circuit Verification: the equipment provides a precise signal chosen by the user to the circuit to be verified: the analysis of how the circuit elaborates it, and the comparison of what was theoretically expected, give to the analyst details about the correct operation of the circuit.
Circuit Control: the generated signal is used as a reference to control the output process of the circuits
Sampling instrument: a particular variant of the use of signal generators in testing is when used as a sample capable of generating a known, stable and defined electrical signal with relatively low uncertainty to be used as a reference for calibration of electrical instrumentation.

Technical features:
1) Signals generator with selectable waveforms:
- Sine waveform
- Square waveform
- Triangular waveform
- Saw waveform
- White Noise waveform

2) Signals generator with selectable frequencies:
- From 5Hz to 22000Hz (some low frequencies or high frequencies tones can not be heard using the internal speaker of the portable device... for these tones, you must use an external audio amplifier or a specific equipment)

3) Repulsive ultrasonic multifrequencies: repellent for mosquito / flies / mice / animals that hates ultrasounds.
 
Application Type:
- UNIVERSAL APP (pay it only once and runs on all your devices)

## Key features

- Selectable waveforms (sine, square, triangle, saw, white noise)
- Frequency range from 5Hz to 22000Hz
- Instrument-specific tone scales
- Looping tones with adjustable timeout
- Real-time volume and timbre editing
- 9-octave tone keyboard
- Ultrasonic multifrequencies for pest repellent

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/ituningfork-tone-generator/id600001658/reviews.md

### 1/5 — Useless

*2016-07-06*

This app might be useful for annoying a cat or dog with a persistent low or high pitched tone, but it is absolutely USELESS to me!  I wanted an app that would display the corresponding waves for each note/frequency.  Instead, this dumb app displays the SAME EXACT IMAGE of a sine curve, no matter what note is played!  I want my money back!

### 1/5 — Stupid app

*2015-11-28*

It only plays one note and the so called sin graph it put up is just for show in the pictures. I needed something that could adjust the graph, but the graph stayed the same no matter what note was played. Ridiculous! Not worth 2 dollars, I want my money back now, this was a complete rip off, would give it 0 stars if I could.

### 2/5 — Can only play one note at a time

*2015-11-19*

I was hoping to experiment with tuning systems, but no can do with just one note

## Frequently asked questions about iTuningFork

### What is iTuningFork used for?

iTuningFork is a tone generator used for tuning musical instruments and testing electronic equipment. It can generate various waveforms and frequencies to assist with these tasks.

### Does iTuningFork have ads?

No, iTuningFork does not contain advertisements. It is a paid application designed for professional and hobbyist use without interruptions.

### What waveforms can iTuningFork generate?

iTuningFork can generate sine, square, triangular, saw, and white noise waveforms. These are selectable by the user for various applications.

### What is the frequency range of iTuningFork?

The app supports frequencies from 5Hz to 22000Hz. For very low or high frequencies, an external audio amplifier or specific equipment may be required.

### Can iTuningFork help tune specific musical instruments?

Yes, iTuningFork provides preset tones for different musical instruments, simplifying the tuning process. You can select your instrument and the app will generate the appropriate tone scale.

### What devices is iTuningFork compatible with?

iTuningFork is a Universal App compatible with iPhone, iPad, and iPod devices. It is designed to run on Apple's mobile operating system.

### How often is iTuningFork updated?

The latest version of iTuningFork is 2.1, which was last updated on May 23, 2023. Updates typically bring bug fixes and feature enhancements.

### What is the price of iTuningFork?

iTuningFork is available for purchase at $1.99. This is a one-time purchase for the full functionality of the app.

## Version history (last 4 releases)

### 2.2 — 2026-07-29

* Minor bugs fixed

### 2.1 — 2023-05-23

* Minor bugs fixed

### 2.0 — 2017-09-27

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

* Minor bugs fixed

### 1.0 — 2013-02-13

No release notes.

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## More apps by Gianluca Natalini

- [Stroboscope Alarm Clock](https://appshunter.io/ios/app/stroboscope-alarm-clock/id348380789)
- [Lightning Distance Calculator](https://appshunter.io/ios/app/lightning-distance-calculator/id348821275)
- [Chronometer and Countdown](https://appshunter.io/ios/app/chronometer-and-countdown/id348852710)
- [Basal Body Temperature Calc.](https://appshunter.io/ios/app/basal-body-temperature-calc/id351060251)
- [Vibrometer](https://appshunter.io/ios/app/vibrometer/id353867884)
- [myVibrometer](https://appshunter.io/ios/app/myvibrometer/id357421007)

All apps by Gianluca Natalini: https://appshunter.io/developer/348380792

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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 2026-08-16.*