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  • #: 228648
  • Price: free ($0.00) In Apple Store
  • Category: Utilities
  • Updated: 2009-08-13
  • Current Version: 1.0
  • 1.0
  • Size: 0.10 MB
  • Language: English
  • Seller: William Ames
  • Requirements: Compatible with iPhone, iPod touch, and iPad. Requires iOS 3.0 or later
  • © William Ames, 2009
  •  Add to Favorite apps



This test tone generator produces test tones over the range of the iPhone: 20Hz to 20kHz. Choose any frequency in that range, and a waveform (sine, square, triangle, sawtooth).

Choose any frequency by using the picker or the frequency text field. Or, use the small piano keyboard or the octave up/down buttons for convenience.

Frequency accuracy is very high. The output is near CD quality (44, 100 samples per second, 16 bits/sample).

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Rated 4/5 based on 3 customer reviews.


5/5 stars


Love the app. Thanks for offering it to the public for free!

5/5 stars


Thanks a ton for writing this. It works beautifully and the interface is very well done. A larger on/off button might be nice.

4/5 stars

Very Handy Tool!

Quite useful for instrument tuning and for testing the frequency response of sound equipment. If an update ever materializes, I have only one request for the dev(s): please remove the dreaded pop that occurs when the tone starts and/or I change wave forms. That would make this app pretty much perfect.


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The information may be outdated (2011-04-29 05:54:09). For actual information go to iTunes

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