ONYX Apps releases Oscilloscope v2.6.3
iPhone, iPad / Tools / Analysis: 'I use this for analog, and audio measurements. Attach an Apple USB adapter and a $40 stereo A-D converter available online, and my iPad is like a $300 O'Scope.' -thymeout- Oscilloscope app is great for analyzing audio range signals, or learning oscilloscope...
www.440audio.com/en/software/vi7793-ONYX-Apps-Oscilloscope/