• Pro Audio Tone Generator 1
  • Pro Audio Tone Generator 2
  • Pro Audio Tone Generator 3

Pro Audio Tone Generator

A basic audio tool that provides live reference tones for sound frequency research projects and general audio tests.
WARNING!! This app generates a resolute signal at +0dB relative to your amplification. Please observe your external volume settings when using this app.


- 1Hz to 20kHz bandwidth
- CD quality sampling at 16bits 44.1KHz
- digital frequency input (tap to set)
- 5 programmable frequency presets (long press)
- ultra low latency control slider
- built in oscillators for Sine, Square and Bopper waveforms
- adjustable random white noise
- stereo sound output switches for Left/Right ON/OFF
- high precision frequency control dial
- plays in background

Category : Tools

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Reviews (30)

dav. c. Apr 12, 2019     

quite useful. I like this app. more features? pay for them! this is free! for me though the sound on and sound off indicators are the wrong way around. when the indicator is displaying sound off, to my way of thinking the sound should really be off! same with the indicators for left and right- the on/off part is the wrong way around. seems to cause me a fair amount of confusion as I am never sure if it is generating a tone or not, or, what I am sending it to doesn't work. thank you.

Aet. E. Dec 24, 2018     

Simple to use and does the job. But every time I open it, it asks to be updated. I have it set to automatically update and when I check My Apps, it says everything is up to date. Still I can't get rid of that request. Also, I got this persistent ticking sound that I couldn't trace. When I discovered PA was running and stopped it, the ticking stopped. An in-app option to disable running in the background would help prevent this.

Ric. D. Apr 29, 2019     

this app would be perfect for my application if it was not for the loop tick at low frequencies that I'm testing. I can hear it with all waveforms. unfortunately it makes it unusable for me. I absolutely love the way out with presets though so hopefully one day It can be fixed.

Ozz. O. Apr 3, 2020     

We're not a professional outfit, just a "hobbyist". For what this app offers, it fits our needs exceptionally. Simple, straightforward and WORKS!! We use it for pinpointing crossover points for multiple loudspeaker arrangements, thus allowing for tweaking of home or vehicle audio setups. Awesome job devs!! Easily, 5 of 5!! 👌😎👍

Joe. I. Dec 15, 2019     

Good enough interface, I can't thank them enough for not having ads or special permissions in the app. Careful though, it's very loud by default.

Dil. F. Dec 12, 2021     

Works perfectly, easy to use, no ads, zero permissions needed to run on my phone. Can't get better than that.

Mar. M. Dec 20, 2021     

Would be great, but doesn't play in background. It did for the first 40 seconds, then stopped and never again. Wanted to like it, but seems broken.

Edw. W. Sep 4, 2021     

So far very good and easy to use for testing subwoofers. A good way to find frequencies where there are rattling objects in or hear listening area.

Ben. M. Jan 16, 2022     

Simple, yet versatile. I like the sound, and come up with new uses all the time. Is this available for apple iphones?

Rob. L. Feb 2, 2019     

I am having the same issue as someone else mentioned. It asks for update every time I open the app. Also it never turns off. It always says it's on, constantly.

Ala. Jun 19, 2019     

Excellent useful tool for creating tones of any frequency in the spectrum. It is simple and effective.

R. P. Nov 28, 2019     

Works well, granular controls without confusion, and best of all, NO permissions required!! What's not to like?

RCL. Sep 25, 2018     

Brilliant! Exactly what I needed. A simple controllable tone generator with full frequency range.

N. N. Aug 18, 2019     

Finally! This app is perfect for my needs! It does exactly what it says it does - nothing more - nothing less, no advertisements, no nagging, no confusion and no malfunction! Thank you thank you thank you!

Wes. B. S. Jul 27, 2021     

Excellently written app and well executed. No ads, no pestering just a solid app. The author was also a big help to me in solving a problem, not with his app.

Joh. E. Nov 8, 2019     

Perfect! No ads, no permissions, great interface. Does exactly what I need.

Lig. 7. Jul 13, 2019     

Had to uninstall it because i didn't hear anything from my phone speakers. I'm not deaf and i have better than normal hearing frequency range than normal people would.

Sim. M. Jul 5, 2019     

Exactly what I was looking for! Please keep it the way it is. Absolutely in love with how simple and intuitive the design is.

A. G. u. Oct 21, 2018     

Works ok but not the cleanest. Good amp, good leads, good headphones so don't know but I achieved what I wanted. And it is free.

Tim. G. S. Jul 19, 2019     

I like the app, but when I set presets the text sais what i set, but always sets volume to default preset frequencies

Wes. H. Jan 19, 2020     

It works w/o ads and purchases. I hope that further frequencies for dog whistle type (up to 50,000 hz) is supported. Good app

MAM. O. Jul 7, 2019     

Does a great job at creating various tones. Alot of fun. Under 1mb and easy to use. Thanks.

4Sq. May 8, 2019     

free. no ads. very clean crisp sound. lots of fun to annoy friends with high pitched ear bleeding sounds! 🤣🎧🎵😵

Mar. D. Sep 28, 2019     

This app didn't generate any sound on the phone speaker -- sound was only on the earpiece jack ... it has some utility

Mat. W. Mar 31, 2020     

Perfect, exactly what I needed, helpful without trying to monetize everything like some other tone generators in the play store

Pri. M. P. Aug 24, 2020     

Very good quality Frequency Generator app... Very very useful & helpful for me.... Thnx to the developer & the team.

Ann. K. Feb 6, 2022     

Cool. Ad-free. My tone generator of choice. Thanks.

Dav. B. Feb 16, 2019     

keeps saying must do upgrade and dumps me to the store app. with NO UPGRADE button. so no upgrade no run app.

PRA. K. B. Mar 6, 2020     

simple but functionality and user interface very good.

A. G. u. Mar 28, 2019     

very usefully designed ,easy to understand and a pleasure to use .