: Users can monitor the Root Mean Square (RMS) average over a window of up to one minute. Customizable Frequency Scales

$0.99 (Note: Recently unpublished from official Google Play store) No ads in the Pro version User Experience and Availability

It provided a real-time view of harmonics and max-hold spectrums. Simplicity:

This is the "cinematic" touch. Instead of a static waveform sitting in the middle of the screen, Audizr Pro allows for slow, automated camera zooms and pans. It feels like a music video, not a graphing calculator.