# Harmonics: Overtone Analyzer — See Hidden Sound Patterns

> See Hidden Sound Patterns (iPhone/iPad app by Kyu-Hee Jang.)

- Source: https://appshunter.io/ios/app/harmonics-overtone-analyzer/id6761739299 (this page in markdown: same URL + `.md`)
- Developer: [Kyu-Hee Jang](https://appshunter.io/developer/1587578867)
- Category: Utilities, Productivity
- Price: Free
- Age rating: 17+
- Requires: iOS 15.1 · 37 MB
- Languages: American English
- Released: 2026-04-16
- Data updated: 2026-05-19
- User reviews in markdown: https://appshunter.io/ios/app/harmonics-overtone-analyzer/id6761739299/reviews.md

## What is Harmonics?

What hidden frequencies are in that sound? Harmonics+ breaks any audio into its fundamental tone and overtones, showing you the full harmonic fingerprint in real time. Perfect for tuning instruments, diagnosing equipment noise, or audio engineering work.

Measure Total Harmonic Distortion (THD) and visualize the frequency spectrum with professional-grade FFT analysis.

Key Features:
- Real-time FFT harmonic analysis
- THD (Total Harmonic Distortion) measurement
- Fundamental frequency detection
- Up to 10 harmonic overtone display
- Frequency spectrum visualization
- Harmonic amplitude bar chart
- Peak hold and averaging modes

Ideal for audio engineers, musicians, and acoustics testing. Uses device microphone for measurement.


## Version history (last 1 release)

### 1.0.2 — 2026-04-16

No release notes.

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All apps by Kyu-Hee Jang: https://appshunter.io/developer/1587578867

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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 2026-05-19.*