Audio Scope - Oscilloscope

Perfect! I have a bunch of squeaky chairs. I bought a cheap USB microphone. I plug the mic into a USB extension cable and that into a USB-A to USB-C adapter. That goes into the bottom of the phone (charging connection) Fire up this app and it just works. Now I can sniff around with the mic and watch the display to find the squeak. It's like an electronic stethoscope that cost me $7 Would even work on auto engines to find that tic tic tic that's been driving you nuts

Good but can't go checking loud sounds or else the screen will be green and my phone will hang. I have 6GB ram. I don't know how this could happen.

I appreciate all you do - Fellow Audiophile. I don't think the plaque should be removed unless people are using the paid version. You should be proud of your work and I don't mind having the plaque with your name on it! Excellent job.