Audio spectrum apps

[pewternhrata]

Any 'decent' apps available for android? I doubt any would be as good as an actual mic and software. Curios on seeing real time specs on my subwoofer.

 

[BoredSysAdmin]

Audiotool and Dayton's calibrated smartphone microphone
https://play.google.com/store/apps/details?id=com.julian.apps.AudioTool
http://www.daytonaudio.com/index.php/imm-6-idevice-calibrated-measurement-microphone.html