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 1.2

Updated libraries to be GDPR compliant and other minor improvements.

Ratings and Reviews

4.5 out of 5
68 Ratings
68 Ratings
gabe z ,

Helpful for audio techs

I use it to find frequencies that are ringing in a system when i cant hunt and kill on an eq like during a show

67 Chem ,

Tone generator

Simple to use and adjust the frequency.

popoperez ,

I like 38 hz find the one that is good for you. It worked for me. Read about Tesla.

I like 38 hz it works for me find the one that works for you. Read about Tesla.

I started about 3 weeks ago and I have been reading about light frequency and power. This application is great I donated for further research. You don’t have to donate anything only if you wish.


15.8 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, Spanish
Age Rating
Rated 4+
© 2017-2018 TMSOFT, LLC


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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