OctaveScope – Visualize Piano Inharmonicity

The OctaveScope Real-Time Audio Analyzer turns your iPhone or iPad into a powerful real-time oscilloscope and spectrum analyzer for music, acoustics, and tuning. Designed for musicians, piano tuners and technicians and the simply curious; it gives you a clear view of sound in both the time and frequency domains.

Features
• Live Microphone Capture – View incoming audio instantly with low-latency processing.
• Waveform Oscilloscope – Inspect raw waveforms and filtered harmonics in real time.
• FFT Deconvolution – Analyze fundamental tones and harmonic overtones with precision.
• Octave Sizing – Widths from 2:1 to 10:5.
• Harmonic Tracking – See multiples of the fundamental frequency (2×, 3×, 4×, etc.) with dedicated filters.
• Dark Mode – Clear high-contrast visuals.
• Educational & Practical – Great for music practice, instrument tuning, and exploring the science of sound.
• Flat-Sharp indicators to visualize intonation.

With OctaveScope, you can watch sound unfold — from raw waveforms to harmonic structure — right in your hand.
Unlock the beauty of an accurately tuned piano scale with OctaveScope.