Tone Generator: Audio Sound Hz 4+

Generate Audio Frequency Waves


Designed for iPad

    • 4.0 • 1 Rating
    • Free



Generate pure sine wave tones at frequencies from 20hz to 22,000hz. Tone generation is useful in tuning instruments, hearing tests, science experiments, and testing audio equipment.

Tone Generator has many uses:
- Hearing Test: What is the lowest/highest frequency you can hear in each ear?
- Tuning Instruments: Does your top guitar string match Low E at 440 Hz?
- Science Experiments: What is the resonant frequency of your wine glass?
- Audio System Test: What frequencies does your subwoofer support?

Adjust audio frequency by dragging the slider or tapping the plus/minus buttons. Adjust device volume using the on-screen volume slider. You can also specify to play audio to any AirPlay supported device. Toggle audio playback using the Play/Pause button.

Created by the audio experts at TMSOFT that brought you the famous White Noise app. Check out all our apps and sounds at

What’s New

Version 2.1.7

- Support for latest iOS versions

v2.0 brings a host of new features including:
- New control bar at the bottom of the view to control playback, volume, airplay, and balance
- Added balance control beneath volume on the control bar. Expand the control bar by swiping up or tapping to reveal balance control
- Redesigned layout to make better use of available space and modernize icons
- Added ability to use keyboard input for Hz values. Tap the value label to bring up the keyboard
- Added a sleep timer which can be set from 15 min to 8 hours in 15 min intervals
- Added user configurable presets. Save your favorite configurations and switch between them easily
- Added reset option which reverts controls back to their defaults
- Enabled mixing with music: you can now listen to other media apps alongside Tone Generator

Many of these features were from user requests, so please keep the feedback coming!

Ratings and Reviews

4.0 out of 5
1 Rating

1 Rating

App Privacy

The developer, TMSOFT, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Identifiers

Data Linked to You

The following data may be collected and linked to your identity:

  • User Content

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Identifiers
  • Usage Data
  • Diagnostics

Privacy practices may vary based on, for example, the features you use or your age. Learn More

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