Oscope is a free oscilloscope plugin developed by Sound-Base Audio. Compatible OS(s): Android.
Features
• Scope, Meter, & FFT displays
• FFT peak tracking with readout
• Quickly take screenshots
• High contrast colors for view-ability.Permissions
This app requires minimal permissions, but must have permission to access and record audio from the device’s microphone, as well as permission to write screenshots to the device’s storage.https://sbaud.io