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Frequency Counter Pro


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Want to know the precise frequency of a signal or the visual shape of a signal? Then you’ve come to the right app. Use your device’s microphone to see waveform, frequency and even the musical note of a signal in real time with Frequency Counter.

What's New in Version 2.0

Bug fixes and improvements.

iPhone Screenshot

iPhone Screenshot 1

Customer Reviews

Testing my home made wind chimes

I bought this to measure the frequency of the tones from a five-tube wind chime I made. My iPhone is a 5C.

The 'scope display is of little use, but the frequency shown below the 'scope is stable and spot on. My design was tp produce and E note at 659 Hz; this app measured it at 658 Hz; damned good. I found no other app that offered the measurement of an arbitrary frequency. ANd this was only $0.99

I wonder if the other reviewers that faulted this app have a defective mic.


Apple needs to add a negative star to better rate apps like this. Not only does the app itself do nothing of value, the developers " instructions/help" mode is useless. This shows how little effort and thought went into development.


Doesn't do anything except waste space. This app is trash.

Frequency Counter Pro
View in iTunes
  • $0.99
  • Category: Utilities
  • Updated:
  • Version: 2.0
  • Size: 10.5 MB
  • Languages: English, French, German, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish
  • Seller:

Compatibility: Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.

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