Apps in this category may contain mild or occasional cartoon, fantasy or real-life violence, as well as occasional or mild adult, sexually suggestive or horrifying content and may not be suitable for children under 9 years of age.

12+

Apps in this category may contain occasional mild indecent language, frequent or intense cartoon or real-life violence, minor or occasional adult or sexually suggestive material, and simulated gambling, and may be for children under 12 years of age.

17+

You must be at least 17 years old to access this App.

Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.

FreqCounter Screenshots

iPhone

About FreqCounter

FreqCounter is a professional digital Sound Wave Analyzer application, multifunctional and handy.
It can be used to display the real-time waveform of sounds, to analyze audio signal with its frequencies and power levels.
You can move, zoom in and out by gestures to get more signal details.
With mighty FFT spectrum analysis function, you can find out the top 5 frequencies in any frequency range you care about.
FreqCounter is an excellent noise detector, helps you to find the source of noise which might bother you. It is also an outstanding education tool of acoustics.

Feature Highlights:
・Capture Sample Rate: 16bit, 48kHz
・Measurable Signal Bandwidth: 20 ~ 20,000 Hz
・Real-time Waveform Display: 4096 Samples/frame
・Input VU Power Level Digital Display: -160 ~ 0 dB
・Precise Time and Frequency Scale: ms, us, Hz
・Gestures: Tap to pause. Move the waveform with single finger slide and zoom it with double fingers slide.
・FFT analysis: Analyze frequency spectrum in real-time. Show the top 5 frequencies in the current frequency range displayed.

What's New in the Latest Version 1.4

Last updated on Jun 21, 2016

Old Versions

This app has been updated by Apple to display the Apple Watch app icon.

Support 64bits iOS devices

Version History

1.4

Jun 21, 2016

This app has been updated by Apple to display the Apple Watch app icon.

Support 64bits iOS devices

1.3

Apr 11, 2013

Now, You can move, zoom in and out by gestures to get more signal details.
・Gestures: Tap to pause. Move the waveform with single finger slide and zoom it with double fingers slide.
・FFT analysis: Analyze frequency spectrum in real-time. Show the top 5 frequencies in the current frequency range displayed.

1.2.1

Mar 4, 2013

Increased the FFT analysis resolution for better low frequency noise detection.

1.2

Jan 11, 2013

・FFT analysis is now a standard feature of FreqCounter, not an In-App Purchases anymore
・iPhone 5 support
・Waveform Display: Tap to pause, Slide up/down to scale
・FFT analysis: analyze frequency spectrum in realtime; show the top 5 frequencies.
・AirPlay Support: Display the waveform on TV through AirPlay mirroring.

1.1

Feb 2, 2012

1. Better performance on iPhone 4
2. Support iOS 4.0 and above
3. Pause/resume by touching the screen
4. FFT analysis: analyze frequency spectrum in realtime; show the top 5 frequencies.
5. realtime waveform refresh is up to 60Fps

1.0.1

Dec 28, 2010

1. Better performance on iPhone 4
2. Support iOS 3.0 and above

1.0

Dec 21, 2010

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