Best Online Tone Generator Apps

233+ iOS apps curated and reviewed

4.6 avg rating
19 free apps
Updated July 2026

Looking for free online tone generator apps? 19 of our 233+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Online Tone Generator Apps (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Tone Generator: Audio Sound HzTone Generator: Audio Sound HzFree4.7★ (2.6K)YesNoJul 2026
2Audio Function GeneratorAudio Function GeneratorFree4.7★ (2.1K)NoYesJul 2026
3Frequency Sound Wave GeneratorFrequency Sound Wave GeneratorFree4.8★ (66)YesYesJul 2026
4Frequency Sound Generator AppFrequency Sound Generator AppFree4.5★ (4.8K)YesYesJul 2026
5Tone Generator EXTone Generator EXFree4.8★ (439)YesNoJul 2026
6MultiTone GeneratorMultiTone GeneratorFree4.6★ (354)NoYesJul 2026
7Sonic | Water EjectSonic | Water EjectFree4.7★ (19K)YesYesJul 2026
8Tone generatorTone generatorFree4.0★ (144)YesYesJul 2026

Top Picks for Online Tone Generator

Tone Generator: Audio Sound Hz#1

Tone Generator: Audio Sound Hz by TMSOFT

Generate Audio Frequency Waves
Editor's Choice
🎵 Music
4.7😊(2.6K ratings)
FreeAds
Tone Generator: Audio Sound Hz screenshot 1
Tone Generator: Audio Sound Hz screenshot 2
Tone Generator: Audio Sound Hz screenshot 3
Tone Generator: Audio Sound Hz screenshot 4
Tone Generator: Audio Sound Hz screenshot 5
Tone Generator: Audio Sound Hz screenshot 6

Create pure sine wave audio tones across a wide frequency range. This tool is ideal for tuning instruments, conducting hearing tests, performing science experiments, and testing audio equipment. Easily adjust frequencies and volume, with support for AirPlay devices.

What We Love

  • 👍 Simple and straightforward
  • 🚀 Works as expected
  • 💡 Useful for testing and tuning
  • 💡 Helps identify hearing range

Room to Improve

  • 🐛 Ads can interfere with usage
  • 🔧 Difficulty fine-tuning frequency
  • 🔧 No amplitude/volume display
Audio Function Generator#2

Audio Function Generator by Thomas Gruber

Frequency and Signal Generator
Strong Contender
🔧 Utilities
4.7😐(2.1K ratings)
FreeIn-App Purchases
Audio Function Generator screenshot 1
Audio Function Generator screenshot 2
Audio Function Generator screenshot 3
Audio Function Generator screenshot 4
Audio Function Generator screenshot 5
Audio Function Generator screenshot 6

Generate various audio test tones, including sine, square, triangle, and sawtooth waves. Explore frequency and volume sweeps, noise generation, and custom preset creation. Advanced features like extended frequency ranges and multi-tone playback are available with an upgrade.

What We Love

  • 👍 Great app
  • 🎶 Helps with Tinnitus
  • 💯 Best app I've paid for
  • 🔍 Highly recommended

Room to Improve

  • 🐛 Crashes
  • 💰 Deceptive/Money hungry
  • 🔒 Basic features paywalled
Frequency Sound Wave Generator#3

Frequency Sound Wave Generator by David Krejci

Try frequency generator tools
Worth Considering
🔧 Utilities
4.8(66 ratings)
FreeAdsIn-App Purchases
Frequency Sound Wave Generator screenshot 1
Frequency Sound Wave Generator screenshot 2
Frequency Sound Wave Generator screenshot 3
Frequency Sound Wave Generator screenshot 4
Frequency Sound Wave Generator screenshot 5
Frequency Sound Wave Generator screenshot 6

Generate and analyze a wide range of sounds and frequencies. Explore tone generation, sound tests, musical tuning, and create custom sound effects. Visualize sound waves and experiment with different waveforms.

More Online Tone Generator apps to explore

4
Frequency Sound Generator App
Frequency Sound Generator App
Frequency Sound Generator App
High Pitch Sound Generator
Free

Generate sound frequencies from 1Hz to 25,000Hz with a simple interface. Features include wave visualization, adjustable sensitivity, and multiple waveform options. Use it for hearing tests, pet training, or as a prank tool.

Frequency range 1Hz to 25,000HzWave visualizationAdjustable sensitivity
🔧 Utilities
(4.8K)
subscription
5
Tone Generator EX
Tone Generator EX
Tone Generator EX
by An-Che Lee
Free

Generate a wide range of audio tones with adjustable frequencies and waveforms. Control playback in the background, from your notification drawer, or lock screen. The app automatically pauses for calls and alarms, and allows you to save custom presets.

Frequency range 15Hz to 22KHzSine, Square, Sawtooth, Triangle waveformsAuto-off timer
🔧 Utilities
(439)
ad-supported
6
MultiTone Generator
MultiTone Generator
MultiTone Generator
Frequency and Signal Generator
Free

Generate a wide range of audio test tones, including sine, rectangular, triangular, and sawtooth waves. Explore frequency sweeps, noise generation, and customizable settings. Upgrade for advanced features like creating multiple tone combinations and extended frequency ranges.

Generate sine, rectangular, triangular, and sawtooth wavesPlay frequency sweep test tonesSweep repeat/wobble function
🎵 Music
(354)
free with in-app purchases
7
Sonic | Water Eject
Sonic | Water Eject
Sonic | Water Eject
Water Eject Speaker Cleaner hz
Free

This app generates precise sine wave tones to help remove water and debris from your device's speakers. Easily adjust frequencies by swiping on the screen, and enjoy features like Apple Watch control and background operation. Premium subscribers gain access to advanced waveforms, unlimited sessions, and an ad-free experience.

Clears moisture from device speakersGenerates tones from 0 Hz to 25 kHzControl via Apple Watch
🎵 Music
(19K)
freemium
8
Tone generator
Tone generator
Tone generator
by michael heinz
Free

Create various periodic signals with adjustable frequency and amplitude for testing electronic circuits or tuning instruments. Features include a metronome, a real-time tuner, and options for generating different noise types and tone sequences. It also offers unique features for hearing tests and party games.

Generate periodic signalsAdjustable frequency and amplitudeIntegrated instrument tuner
🔧 Utilities
(144)
free with in-app purchases
9
Frequency: Sound Generator
Frequency: Sound Generator
Frequency: Sound Generator
by Lucija Jaksic
Free

Generate various sound waves, including sine, square, sawtooth, and triangle, with adjustable frequencies from 1Hz to 22000Hz. Visually observe animated sound waves and control volume. Useful for testing hearing, speakers, instruments, and even cleaning water from speakers.

Generate sine, square, sawtooth, triangle wavesAdjustable frequency (1Hz-22000Hz)Animated sound wave visualization
🔧 Utilities
(340)
free with in-app purchases
10
Tone Generator: Frequency App
Tone Generator: Frequency App
Tone Generator: Frequency App
Hearing Test, Speaker Cleaner
Free

Generate various audio tones like sine, square, sawtooth, and triangle waves across a wide frequency range. Adjust frequencies by swiping and utilize built-in features for fun hearing tests or to clean your device's speaker.

Sine, square, sawtooth, triangle wave generationAdjustable frequency via swipeBuilt-in hearing test sweep
🔧 Utilities
(135)
free with in-app purchases
11
Sonic Pitch Sound Generator
Sonic Pitch Sound Generator
Sonic Pitch Sound Generator
Clear Sound Wave Generator
Free

Generate precise sound waves with adjustable frequencies and various waveform types. Use it for audio testing, insect repulsion, pet training, or as a prank tool. Features include a decibel meter and stereo sound tests.

Adjustable sine, square, triangle, and sawtooth waveformsPrecise frequency control from 0Hz to 25kHzWave visualization
🔧 Utilities
(1.8K)
subscription
12
Speaker Test - Tone Generator
Speaker Test - Tone Generator
Speaker Test - Tone Generator
Tone Generator,Speaker Booster
Free

Easily test and enhance your device's audio output. This app offers a tone generator for custom frequencies and a speaker booster to improve sound quality. It includes features for stereo testing and customizable test plans to ensure optimal speaker performance.

Speaker testingTone generator (0-20000 Hz)Speaker booster (bass & volume)
🔧 Utilities
(18)
free with in-app purchases
13
Frequency: Healing Sounds
Frequency: Healing Sounds
Frequency: Healing Sounds
Relax, Fall Asleep Fast
Free

This app offers science-inspired sound therapy to promote natural healing and restore balance to your mind, body, and brain. It utilizes specific frequencies to aid in sleep, reduce pain, and enhance mental clarity for a holistic wellness journey.

Full body healing & DNA repairRestorative sleep supportGentle relief for body pain
💪 Health & Fitness
(2.3K)
free with in-app purchases
14
High Frequency Tones
High Frequency Tones
High Frequency Tones
Generate any frequency
Free

Generate sound waves across a wide frequency range to test hearing limits. Explore potential uses like deterring pests or competing with friends to see who can hear higher pitches. An optional premium upgrade removes ads and unlocks additional waveform options.

Generate sound waves up to 20,000 HzTest human hearing limitsDog whistle functionality
🔧 Utilities
(595)
free with in-app purchases
15
Frequency Generator: HZ
Frequency Generator: HZ
Frequency Generator: HZ
432-528 Hertz Healing Sounds
Free

Enhance sleep and focus with scientifically engineered sound frequencies. This app offers customizable modes for deep slumber and peak concentration, utilizing binaural and isochronic beats. Enjoy an intuitive interface and offline access to boost your well-being and productivity.

Sleep Mode with Delta & Theta frequenciesFocus Mode with Alpha & Beta frequenciesBinaural and Isochronic beats
🎵 Music
(470)
free with in-app purchases
16
The Oscillator
The Oscillator
The Oscillator
Tone and Noise Generator
Free

Generate tones and noise with adjustable lowpass filters and panning. Choose from sine, triangle, sawtooth, and square waveforms. Precisely tune frequencies in Hz or MIDI notes.

Two oscillatorsOne noise generatorIndividual lowpass filters
🎵 Music
(55)
paid
17
ToneAdapt - Guitar Tone Match
ToneAdapt - Guitar Tone Match
ToneAdapt - Guitar Tone Match
Get Any Tone on Your Gear
Free

This app analyzes songs to help you replicate their guitar tones on your own gear. It provides specific settings for your amp, guitar, and pedals, adapted to your unique setup. Access a vast database of gear and community-shared tones to achieve desired sounds.

Match any song's guitar toneAdapt settings to your specific gearAccess extensive gear database
🎵 Music
(1.5K)
freemium
18
Tone Generator!
Tone Generator!
Tone Generator!
by Peter Deelstra
$0.99

Create and play a wide range of audio tones with adjustable frequencies and waveforms. Generate up to 12 simultaneous tones with individual volume control. Modify tones in real-time for versatile sound generation.

Generate tones from 20 Hz to 15000 HzAdjust tones while playingPlay up to 12 tones simultaneously
🔧 Utilities
(21)
free
19
Tone Generator App
Tone Generator App
Tone Generator App
from 20 Hz to 20 kHz
Free

Generate sine wave tones across a wide frequency range, from 20 Hz to 20 kHz. Useful for testing audio equipment, tuning musical instruments, and even for basic hearing assessments.

Sine wave tone generationFrequency range 20 Hz to 20 kHzHeadphone and speaker testing
🎵 Music
(131)
free with in-app purchases
20
Tone Generator EM-1
Tone Generator EM-1
Tone Generator EM-1
Frequency Sound Player
Free

Generate sounds across a wide frequency range to test hearing, tune instruments, or experiment with audio. Easily select frequencies with a slider, adjust volume, and play tones.

Generate sounds from 1Hz to 22kHzTest hearing and audio equipmentTune musical instruments
🎵 Music
(31)
free with in-app purchases

FAQ about Online Tone Generator

What are the best online tone generator apps for iPhone?
Tone Generator: Audio Sound Hz tops our online tone generator apps ranking as of July 2026, with a 4.7-star average from 2.6K App Store ratings, and it's free to download.
Yes — 19 of the top online tone generator apps we rank are free to download, including Tone Generator: Audio Sound Hz and Audio Function Generator.
Tone Generator: Audio Sound Hz shows ads and has no in-app purchases, according to its App Store listing as of July 2026.
We track 233+ online tone generator apps on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.
This app generates pure sine wave audio tones at frequencies ranging from 20Hz to 22,000Hz. It's designed for various applications like tuning instruments, conducting hearing tests, performing science experiments, and testing audio equipment.
Key uses include performing hearing tests to determine the lowest and highest frequencies you can hear, tuning musical instruments like guitars to specific frequencies (e.g., 440 Hz for Low E), conducting science experiments such as finding the resonant frequency of a wine glass, and testing audio systems like subwoofers.