Audio Monitor

[dentmac]

Hi
I've been playing with spectrum analyzer for a different and simpler purpose but this one may be closer to what you want. No doubt there are much more sophisticated ones but for $.99? Can't replay just record visible spectrum.
Android app "spectrum analyse".
I simply wanted an app that could hear better then me so I could put the "mouthpiece" end of the phone near air joints to listen for leaks. ( I have a fat head). App I found is "spectrum analyser". (With the R . )Lots of ads bit it seems to work.