EchoTrace - Audio Recorder

EchoTrace is a sophisticated audio toolkit on your wrist. It allows you to easily record audio from both the watch and your connected bluetooth audio device, including in the background, playback those audio recordings, and tune a guitar or other instrument. It has an oscilloscope, spectrum view, gain and gate settings, adjustable A440 -> other hz reference tuning, pitch stability trace, harmonic overtones analysis, and displays a configurable rolling spectrogram with multiple color settings and scales and drawing directions.