1. Home
  2. Topics
  3. Online Tone Generator

Best Online Tone Generator Apps

248+ iOS apps curated and reviewed

4.7 avg rating
20 free apps
Updated August 2026

Looking for free online tone generator apps? 20 of our 248+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Online Tone Generator Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Tone Generator: Audio Sound HzTone Generator: Audio Sound HzFree4.7★ (2.6K)YesNoAug 2026
2Frequency: Sound GeneratorFrequency: Sound GeneratorFree4.7★ (340)YesNoAug 2026
3Tone Generator EXTone Generator EXFree4.8★ (439)YesNoAug 2026
4Audio Function GeneratorAudio Function GeneratorFree4.7★ (2.2K)NoYesAug 2026
5Frequency Sound Generator AppFrequency Sound Generator AppFree4.5★ (4.8K)YesYesAug 2026
6Frequency Sound Wave GeneratorFrequency Sound Wave GeneratorFree4.8★ (74)YesYesAug 2026
7Tone Generator: Frequency AppTone Generator: Frequency AppFree4.8★ (137)YesYesAug 2026
8ToneCraftr - Match Guitar ToneToneCraftr - Match Guitar ToneFree—NoYesAug 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
Frequency: Sound Generator#2

Frequency: Sound Generator by Lucija Jaksic

Strong Contender
🔧 Utilities
4.7😊(340 ratings)
FreeAds
Frequency: Sound Generator screenshot 1
Frequency: Sound Generator screenshot 2
Frequency: Sound Generator screenshot 3

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.

What We Love

  • 👍 Simple and easy to use interface
  • 🎵 Accurate frequency generation
  • 💰 Free application
  • 🧘 Helpful for meditation and stress relief

Room to Improve

  • 📢 Intrusive and inappropriate advertisements
  • 🔊 Potential audio damage to speakers/hearing
  • 🔒 Privacy concerns and data collection issues
Tone Generator EX#3

Tone Generator EX by An-Che Lee

Worth Considering
🔧 Utilities
4.8😊(439 ratings)
FreeAds
Tone Generator EX screenshot 1
Tone Generator EX screenshot 2
Tone Generator EX screenshot 3

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.

What We Love

  • 👍 Clean, intuitive, and elegant interface design
  • 🎵 Precise frequency control with decimal accuracy
  • 💰 Completely free with no ads or subscriptions
  • ⚙️ Customizable A440 tuning standard adjustment

Room to Improve

  • 📉 Limited frequency range (minimum 15Hz, maximum needs extension)
  • 🚫 No direct frequency input via typing
  • ⏸️ No export functionality for generated tones

More Online Tone Generator apps to explore

4
Audio Function Generator
Audio Function Generator
Audio Function Generator
Frequency and Signal Generator
Free

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.

Generate sine, square, triangle, and sawtooth tonesFrequency and volume sweep generationNoise generation (white, pink, violet, etc.)
🔧 Utilities
(2.2K)
free with in-app purchases
5
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
6
Frequency Sound Wave Generator
Frequency Sound Wave Generator
Frequency Sound Wave Generator
Use frequency generator tools
Free

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.

Single and multiple frequency generationMusical notes presetsBinaural beats
🔧 Utilities
(74)
free with in-app purchases
7
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
(137)
free with in-app purchases
8
ToneCraftr - Match Guitar Tone
ToneCraftr - Match Guitar Tone
ToneCraftr - Match Guitar Tone
Match any song on your rig
Free
🎬 Entertainment
(0)
9
Tone Generator: Frequency Hz
Tone Generator: Frequency Hz
Tone Generator: Frequency Hz
Instant Tuning & Ear Training
Free

Generate precise audio tones for tuning instruments, testing sound equipment, or practicing ear training. This app offers a clean, focused experience with no ads or accounts, working offline for instant reference.

Reference tone generationNote or Hz inputOffline functionality
🎵 Music
(0)
free with in-app purchases
10
Wave Generator
Wave Generator
Wave Generator
by Ben Taylor Ltd
Free
🔧 Utilities
(0)
11
Golden Tone Generator
Golden Tone Generator
Golden Tone Generator
Golden Ratio Tone Generator
Free

Generate tones using various frequency systems like Golden Ratio, Fibonacci, and Solfeggio. Offers precision playback, custom playlists, and export options. Ideal for musicians, sound designers, and relaxation.

Multiple frequency systems (Golden Ratio, Fibonacci, Solfeggio, 12-TET)Precision playback with adjustable A4 referenceAdvanced playback controls with fade in/out
🎵 Music
(1)
free with in-app purchases
12
Tone Generator+ Freq
Tone Generator+ Freq
Tone Generator+ Freq
Sine Wave Sound Maker
Free

Generate precise audio tones with various waveforms for testing, calibration, and experiments. Offers a wide frequency range and adjustable volume in a simple interface.

Precise frequency generationMultiple waveform types (sine, square, sawtooth, triangle)Adjustable volume control
🔧 Utilities
(1)
ad-supported
13
Telescada NeXGen REMS
Telescada NeXGen REMS
Telescada NeXGen REMS
by Peter Battelino
Free
🔧 Utilities
(0)
14
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
(152)
free with in-app purchases
15
Energy Spark Tone Generator
Energy Spark Tone Generator
Energy Spark Tone Generator
by Energy Spark Inc
Free

This utility app generates single or multiple audio tones. It can be used with specific hardware to detect, ingest, and visualize sound frequencies.

Single tone generationMultiple tone generationCompatibility with Energy Necklace™
🔧 Utilities
(1)
free
16
Tone Generate Pro
Tone Generate Pro
Tone Generate Pro
Audio Tone Generator
Free
🔧 Utilities
(0)
17
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
(355)
free with in-app purchases
18
Tone Generator - Clean Speaker
Tone Generator - Clean Speaker
Tone Generator - Clean Speaker
Frequency Sound Generator
Free

This app allows users to generate various audio tones and test speaker performance. It offers automatic and manual frequency sweeps, different wave modes, and stereo/mono options for comprehensive audio exploration and device verification.

Automatic frequency generationManual frequency controlLinear, Swing, and Burst wave modes
🔧 Utilities
(0)
free with in-app purchases
19
Frequency Generator: Tone HZ
Frequency Generator: Tone HZ
Frequency Generator: Tone HZ
Binaural beats & pure waveform
Free
🌟 Lifestyle
(0)
20
Freq'n Awesome Tone Generator
Freq'n Awesome Tone Generator
Freq'n Awesome Tone Generator
Speaker & Audio Test Tones
Free
🔧 Utilities
(0)

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 August 2026, with a 4.7-star average from 2.6K App Store ratings, and it's free to download.
Yes — 20 of the top online tone generator apps we rank are free to download, including Tone Generator: Audio Sound Hz and Frequency: Sound Generator.
Tone Generator: Audio Sound Hz shows ads and has no in-app purchases, according to its App Store listing as of August 2026.
We track 248+ online tone generator apps on the iOS App Store as of August 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.