FrequenSee - Spectrum Analyzer FrequenSee - Spectrum Analyzer

the author of this app says:

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

This real-time spectrum analyzer / audio visualizer features:
- 128 high-quality frequency bands [20Hz to 22kHz]
- Logarithmic frequency scale to match human perception
- High framerate to see smooth frequency and amplitude movements
- Low latency for high responsiveness
- High performance native code using OpenGL ES 2.0
- FFT window size 2048 @ 43 frames per second

Note:
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Any feedback is welcome.