# OctaveScope — Piano Inharmonicity Visualizer

> Piano Inharmonicity Visualizer (iPhone/iPad app by Richard Barber.)

- Source: https://appshunter.io/ios/app/octavescope/id6751937285 (this page in markdown: same URL + `.md`)
- Developer: [Richard Barber](https://appshunter.io/developer/1750650178)
- Category: Music, Education
- Price: $24.99
- Age rating: 4+
- Requires: iOS 18.5 · 11 MB
- Languages: American English
- Released: 2025-09-15
- Data updated: 2026-07-30
- User reviews in markdown: https://appshunter.io/ios/app/octavescope/id6751937285/reviews.md

## What is OctaveScope?

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.


## Version history (last 2 releases)

### 1.1 — 2026-07-26

Improved stability of audio analysis.

### 1.0 — 2025-09-15

No release notes.

## More apps by Richard Barber

- [RAWUnravel](https://appshunter.io/ios/app/rawunravel/id6749280635)
- [Pictodraw](https://appshunter.io/ios/app/pictodraw/id6753665689)

All apps by Richard Barber: https://appshunter.io/developer/1750650178

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-30.*