Frequency Meter PRO is a comprehensive tool for audio frequency diagnostics. Includes REAL TIME scanning of audio signal from internal or external microphone.

*** OUTPUT ***
Visualization is done on real like device that shows:
- Audio level
- Noise Level
- Frequency range
- Current frequency
- Frequency oscilloscope
- Spectrum analyzer

*** ACCURACY ***
Application is calibrated with real tone generator. Working range is around 15 - 22500 Hz, and accuracy around +/- 0.5 %.

You can easily set a limit that removes noise treshold with included trackbar.

Choose minimum and maximum frequency you want to scan.

*** EXPORT ***
You can export output chart to comma-separated file that you can later analyze with MS Excel or other table processor. Application shares document folder in iTunes.

*** SUPPORT***
Please don't hesitate to write us for details or questions:

What’s New

Version 2.0

- iphone x ready
- increased accuracy

Ratings and Reviews

1.6 out of 5
25 Ratings

25 Ratings

Key Source ,

Don't waste your $2.99 like I did

This is a joke. I think it was designed by a 3rd grader. No features at all. I didn't read the reviews before I bought it and sure wish I would have. I never leave reviews but this time it's a must if that tells you anything.

p!kupthepieces ,

Only shows certain frequencies

2 problems that make me want my $2.99 back:
1) I can't analyze frequencies without recording a file.
2) The frequency meter actually just shows you which note (A/A#/B/etc.) you are closest to, not the actual frequency of the note you are playing.

Jmikej ,

Limited and inaccurate!

It does work as a frequency meter but is somewhat limited. It doesn’t work on frequencies below 150 HZ . I tested it on 150HZ then 120 HZ. It showed a harmonic of 120 HZ.
99 cents would have been a fair price. Especially since it appropriated the fluke meter style to elicit confidence and imply compared results.


Lubomir Havran BINARTS
3.4 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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