A simple audio analyzer for your phone. Displays a waveform, frequency spectrum, sonagram, and VU Meter.
dB levels are shown relative to your device's maximum input level. No calibration facility -- maybe one day.
Please see the help for a user's manual.
Sorry, but due to the time consumed by my regular paid job, I'm no longer able to support hobby projects like Audalyzer.
Added a new Sonagram display by Ozneb. Swipe the display left and right to change instrument configurations; long-press on the sonagram or spectrum to zoom it to full-screen.