Best Free Tone Generator Apps

249+ iOS apps curated and reviewed

4.6 avg rating
18 free apps
Updated September 2026

Out of 249+ free tone generator apps on iOS, 18 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Compare top Free Tone Generator Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Tone Generator: Audio Sound HzTone Generator: Audio Sound HzFree4.7β˜… (2.6K)YesNoSep 2026
2Frequency: Sound GeneratorFrequency: Sound GeneratorFree4.7β˜… (340)YesNoSep 2026
3Tone Generator: Frequency HzTone Generator: Frequency HzFreeβ€”NoYesSep 2026
4Audio Function GeneratorAudio Function GeneratorFree4.7β˜… (2.2K)NoYesSep 2026
5Tone Generator EXTone Generator EXFree4.8β˜… (439)YesNoSep 2026
6Tone Generator: Frequency AppTone Generator: Frequency AppFree4.8β˜… (138)YesYesSep 2026
7Tone Generate ProTone Generate ProFreeβ€”NoNoMay 2026
8Freq'n Awesome Tone GeneratorFreq'n Awesome Tone GeneratorFreeβ€”YesYesMay 2026

Top Picks for Free 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

  • πŸ‘ Simple and straightforward
  • πŸš€ Works as expected
  • πŸ’‘ Useful for testing and tuning
  • πŸ’‘ Helps identify hearing range

Room to Improve

  • πŸ› Ads can interfere with usage
  • πŸ”§ Difficulty fine-tuning frequency
  • πŸ”§ No amplitude/volume display
  • πŸ”§ Limited functionality
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

  • πŸ‘ Simple and easy to use interface
  • 🎡 Accurate frequency generation
  • πŸ’° Free application
  • 🧘 Helpful for meditation and stress relief
  • πŸ”§ Multiple waveform options (sine, square, triangular, sawtooth)
  • 🎚️ Background operation capability
  • 🎯 Useful for audio calibration and testing
  • ⚑ No popup ads or payment walls

Room to Improve

  • πŸ“’ Intrusive and inappropriate advertisements
  • πŸ”Š Potential audio damage to speakers/hearing
  • πŸ”’ Privacy concerns and data collection issues
  • πŸ“± UI elements off-screen on compact devices
  • 🎚️ Difficult frequency selection with slider
  • 🚫 No AirPlay support
  • ⏸️ App closes when switching to other apps
  • 😀 Pushy review request prompts

More Free Tone Generator apps to explore

FAQ about Free Tone Generator

What are the best free tone generator apps for iPhone?
Tone Generator: Audio Sound Hz tops our free tone generator apps ranking as of September 2026, with a 4.7-star average from 2.6K App Store ratings, and it's free to download.
Tone Generator: Audio Sound Hz shows ads and has no in-app purchases, according to its App Store listing as of September 2026.
We track 249+ free tone generator apps on the iOS App Store as of September 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.