# TestTone

> Test Signal Audio Generator

Canonical page: [https://chrome-stats.com/d/id384289230](https://chrome-stats.com/d/id384289230)

## Overview

- **ID:** `id384289230`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** HTLab
- **Category:** Music
- **Version:** 1.5.1
- **Last updated:** 2026-05-03
- **First published:** 2010-07-31
- **Size:** 8.10 MB
- **Data as of:** 2026-09-03
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/testtone/id384289230)
- **Website:** [https://www.asahi-net.or.jp/~mw6h-tkd/](https://www.asahi-net.or.jp/~mw6h-tkd/)
- **Privacy policy:** [https://www.asahi-net.or.jp/~mw6h-tkd/](https://www.asahi-net.or.jp/~mw6h-tkd/)

## Description

This test signal generator checks audio gear and frequency ranges, playing sine, square and sawtooth waves from 20 Hz to 20 kHz, plus white and pink noise.

This test signal generator is ideal for checking audio equipment and confirming audible frequency ranges.It can play sine, triangle, sawtooth, and square waves from 20 Hz to 20 kHz, as well as white noise and pink noise.

Features
	•	You can switch between preset frequencies, white noise, and pink noise using the frequency preset buttons.
You can also tap the frequency display area to enter any desired frequency manually.
The frequency can also be adjusted using the left/right buttons or by tapping the frequency display.
	•	Supports switching between sine, triangle, sawtooth, and square waveforms.
	•	Playback starts or stops by tapping the ON/OFF button or the icon at the top.

Note
Playing at high volumes may cause hearing damage or damage to your audio equipment. Please use with caution.

## Rankings

- #1,650,990 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id384289230)