TrueTone icon


    by: 539 8.6

    8.6 Users



    Test your hearing! Find out the real limits of your phone audio! Annoy your friends (at your own risk of course)! Learn and teach about how different tones sound like! Generate exact references tones! All this and more in this app.

    -can cover a frequency range from 10Hz to 20kHz (actual range dependent on your audio hardware),
    -exact tone generation, no messy approximation,
    -*new* toggle for logarithmic slider,
    -multiple wave types! Choose from sine, square, sawtooth and triangle,
    -setting the frequency down to a single Hertz (and not 10 Hz, like in some other applications),
    -connect external speakers to your device for even better sound and frequency range!
    -Easy way to contact the developer: just press the "Report Bug/Suggest Feature" button and type away!
    -option to keep the app running indefinitely,
    -adapted for accessibility applications - easier to use for the vision-impaired.

    Note: you can set the volume simply by using the buttons on your phone.

    Internet permissions are needed for:
    -ads (this is an ad-supported ad),
    -feedback (you can report a bug or suggest a feature directly from the app),
    -ANONYMOUS usage statistics.

    Wakelock permission is needed for the "keep alive" option.

    Tags: anonymous usage stats , true tone , truetone , 10 hz tone generator , tone generator with seekbar , tone generator hardware , tone generator for seeing impaired phone , tone generator 10hz , tone generator

    Users review

    from 539 reviews



    Users comments for TrueTone

    Stephen Marshall

    by Stephen Marshall

    Feb 03, 2018  |  "Awesome"

    First, it worked "out of the box", and I was listening to tones immediately. Bravo! Second, I have tinnitus of near a single pitch. Playing a tone instantly reduced the ringing in my head. I still need to find the correct pitch.

    A Google user

    by A Google user

    Aug 29, 2017  |  "Awesome"

    U due not play guitar but I play other instruments & ya it helps

    A Google user

    by A Google user

    Aug 01, 2017  |  "Great"

    Great app, does exactly what it says. Just beware of the in app volume control, it isn't always interlinking. Therefore what you expect to be a quiet tone, turns out to be loud... A bug me thinks.

    Fluggexg Grrubdef

    by Fluggexg Grrubdef

    Jul 22, 2016  |  "Great"

    Be careful not to use the high frequencies around dogs. I heard nothing, but my poor pup leaped from his bed and is hiding under the couch and shaking now. The cat can hear it too, but she doesn't care.

    Lukas Untersteiner

    by Lukas Untersteiner

    Jan 29, 2016  |  "OK"

    Log sweep feature is very useful but please fix the clicking during sweep!!!!!!

    Kevin Wright

    by Kevin Wright

    Jan 16, 2016  |  "Awesome"

    60 Hz is on the money.