Tone Generator

Contains ads
4.2
350 reviews
100K+
Downloads
Content rating
Everyone
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About this app

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?

Directions:
Adjust audio frequency by dragging the slider or tapping the plus/minus buttons. Adjust device volume using the on-screen volume slider. 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 http://www.tmsoft.com/
Updated on
Jul 27, 2022

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Location, App activity and 2 others
This app may collect these data types
Location, App activity and 2 others
Data is encrypted in transit
Data can’t be deleted
4.2
350 reviews
Charlie B
January 29, 2021
As a TMSoft fan I had to give this try when I was looking for a tone generator. It works but I can't say much more. The volume is horrible even with a volume booster. I'm not sure why this is but I wish I could make it louder. Additionally there is no notation of musical scale which would be a nice option as well. Otherwise it's no frills and works without issue. The app is also very small.
18 people found this review helpful
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Joe buckley
February 16, 2021
Overall the app works well but it desperately needs the ability to type in the desired frequency. The slider bar is inaccurate, especially at higher frequencies (10k-22k), and you'd have to press the up or down buttons hundreds of times to get where you meant to be.
30 people found this review helpful
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Keelan Fox
October 23, 2022
This app does not produce the right frequencies. I subjected this to a spectrograph and it was not putting out the right frequencies. It's either 1 Hertz low or too high.
4 people found this review helpful
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What's new

- New control bar at the bottom of the view to control playback, volume, and balance
- Added balance control beneath volume on the control bar. Expand the control bar by swiping up or tapping
- Added ability to use keyboard input for Hz values. Tap the value label to bring up the keyboard
- Added a sleep timer
- Added user configurable presets. Save your favorite configurations and switch between them easily.

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