Simply generate a tone with a frequency between 1Hz and 22000Hz on your smartphone or tablet.


Simple and Accurate
Use the cursor or the keyboard of your smartphone to adjust the frequency, then click "PLAY" to play the tone.

Multiple use cases
-Test your hearing and that of your surroundings by determining the range of frequencies that you are able to hear.
On average, the human ear perceives frequencies between 20Hz and 20000Hz, but this perception can deteriorate with age, especially for frequencies close to ultrasound.

-Experience the acoustic beat phenomenon: For example, launch the application on two devices and then generate a frequency of 440Hz on one and 443Hz on the other.
You will then hear a "beat" of frequency 3Hz. This phenomenon is frequently exploited by musicians to tune their instruments by ear.

-Test your speakers and other audio devices.


The generated signal is a sine wave.

// Option A //

To download Frequency Sound Generator mod from HappyMod.com.
You need enable the option "Unknown Sources".
1. Click on the above link to download Frequency Sound Generator mod APK.
2. Save the file in your device Downloads folder.
3. Now tap on Install and wait for the installation to finish.
4. Once it is done, open the game and start playing it right away.

// Option B //

To download Frequency Sound Generator from HappyMod APP, you can follow this:
1. Open your browser and download the HappyMod APK file from HappyMod.com - the only official website of HappyMod.
2. Open Android Settings and go into Privacy or Security.
3. Tap the option to Allow Unknown Sources and enable it.
4. Go to your Android downloads and tap the APK file.
5. Follow the directions on the screen to install it.
6. Search Frequency Sound Generator in HappyMod App.