See your voice, music or test your audio equipment. See whatever your microphone can hear!

This real-time spectrum analyzer (RTA) / audio visualizer features:
- 256 high-quality frequency bands [20Hz to 24kHz]
- Logarithmic frequency scale to match human perception
- Low latency for high responsiveness
- High frame rate to see smooth frequency and amplitude movements
- Low battery drain due to high performance code
- Fast graphics using OpenGL ES 2.0
- FFT window size 4096 @ 60 frames per second

What’s New

Version 2.1

- changed sampling rate to 48 kHz, improving the support for iPhone 6s and iPhone 7, and improving the quality in general
- uses the measurement mode, minimizing the amount of system-supplied signal processing
- should now have a flat frequency response curve (influenced by microphone characteristics)

Ratings and Reviews

5.0 out of 5
1 Rating

1 Rating

Subhop ,

Thank you!

Everything I need. Thank you for including the frequencies at the bottom of the graph! Better than others and less expensive? Sign me up!

Tom95472 ,

Doesn't work IOS7.1 - black screen

Just bought. Does not seem to work. Just a black screen. Sent inquiry, got answer quick (IOS setting) and works great. Using to get used to special hearing aid.

Llamalord318 ,

Great app!

A lot smoother then other frequency analyzers. The simplicity of it also helps. I think there should be a "How to use this" page, explaining what the user is seeing though.


Daniel Bach
626.7 KB

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



Age Rating
Rated 4+
© 2012-2017 Daniel Bach


  • Family Sharing

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

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