Tone Generator PRO

for Android

Professional Audio Tone Generator for the sound engineer, musician or enthusiast.


Tone generator

In this mode, a sinusoidal waveform with a single choosed frequency will be generated. These are the basic building blocks of more complex waves.

Sweep generator

In this mode, the generator will output a sound wave that is varied or swept between the start and end frequencies.

Multi-tone generator

With this module, you can generate 8 simultaneous sound waves the diferents frequencies, amplitudes and fases.

Noise generator

With this module, you can generate white and pink noise. This module has an equalizer and a sleep timer.

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Tecnical specifications:

  • Sweep tone generator (linear or logarithmic for musicians)
  • Function generator - Rock solid, double precision, real time, accurate, wave generator (64-bit precision IEEE 754 floating point engine)
  • Real time manual frequency increment or decrement (accurate, without pops and clicks)
  • Loops (continuous, with no lag, no clicks)
  • Amplitude modulation
  • 8 tracks real time multi-tone generator
  • White noise generator
  • Pink noise generator
  • Save favorite tones and sweeps in a list for future use
  • Precise left/right channel volume control
  • Precise fade in and fade out time configuration
  • Possibility to invert one channel for cancellation effects.
  • Many, many pre-programmed sound tests, ready to be used by the sound professional
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What you can do with this app:

  • Speaker tests
  • Fine tune an audio system
  • Create relaxation and meditations sounds
  • Noise mask
  • Sleep inducing with pink noise
  • Find the Tinnitus frequency.
  • Age hearing loss test.
  • Learn many facts about sound
  • Your imagination is the limit!


Lucas Bicicchi

Perfect, paid Pro version immediately to help improve the application.

Alex Nor

Excellent Application. Everything works correctly Samsung Galaxy S4. Thank you!.


Very good.

Shawn Russell

Great app. Simple to use.

Nicu 2008

Good job!.

Cherry Darling

The frequency/sweep generator is great, love the ability to save presets (wish it saved all settings, mind); there is also a noise generator with graphic EQ! Glad to support this developer.

Carl Browning

Great tool for my audio needs Great audio tool in my opinion, very versatile and worth the Pro upgrade. Thanks Jose, keep up the mods and good work, 73!

Kathy Kiarie

Woooow.....It's just too perfect.

Nicora Bogdan

It has so many features !!! It really is for professionals and the feature I like very much is when you generate tones, it also shows you some fun facts and it has some presets.

Niky Draghici

Reliable and simple to use.

Anthony Zurkster

I wanted to rewrite my review after having used the paid version of this app for a couple of years. I design and sound test sub enclosures and use professional frequency generators in our workshop, however I was looking for an app to use during installations. This app is perfect for generating clean signals at very specific frequencies and sweep ranges, with all the added functionality of a pro FG tool, this app has been an invaluable in-pocket asset for quick calibration. Well worth the small fee, for reliabile tone generation with ad-free functionality.

Niky Draghici

Reliable and simple to use.

Hubert Omosor

I love this app, its highly recommended for sound engineers.


Very beautiful You guys are great, an app that finally works .... REALLY.

Don Michael Corbin

The best frequency generator in the Play Store After downloading and trying many other similar apps in the Play Store I kept coming back to this one. It not only provides more options for the manipulation of the frequencies, it's also very informative. Give it a try and see if you like it, if so I recommend getting the Pro version.

Alfil Man


Carlos Bernardes

I guess it is really the best sound generator, 5 out of 5.