# Music Spectrograph vs HarmonyWiz

The clearest difference is rating: HarmonyWiz at 4.5 against Music Spectrograph's 2.5. HarmonyWiz also leads on review sentiment (69% vs 50%) and iOS requirement (9.2 vs 12.4). Music Spectrograph's advantage is in-app purchases (none vs 5) and update cadence (every 6 weeks vs every 3 months). On price, ratings volume, ads and device support there is nothing between them.

Music Spectrograph costs $9.99 and HarmonyWiz $9.99 up front. HarmonyWiz sells 5 one-off in-app purchases. Music Spectrograph asks for nothing beyond the download.

HarmonyWiz holds the better App Store score, 4.5 against 2.5. Both are backed by a comparable volume of ratings — 4 and 4 respectively. Written reviews point the same way: 50% of Music Spectrograph's written reviews are positive against 69% of HarmonyWiz's.

Music Spectrograph ships an update every 6 weeks, HarmonyWiz every 3 months. The most recent releases landed on September 21, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Music Spectrograph | HarmonyWiz |
| --- | --- | --- |
| Price | $9.99 | $9.99 |
| Rating | [2.5 (4 ratings)](https://appshunter.io/ios/app/music-spectrograph/id432044946/reviews) | **[4.5 (4 ratings)](https://appshunter.io/ios/app/harmonywiz/id629564112/reviews)** |
| Number of ratings | 4 | 4 |
| Positive reviews | 50.0% of reviews | **69.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 3 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 1 MB | 137 MB |
| Requires iOS | 12.4 | **9.2** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HotPaw Productions](https://appshunter.io/developer/285074853) | [Wizdom Music LLC](https://appshunter.io/developer/377345351) |

## What reviewers say

### Music Spectrograph

[App page](https://appshunter.io/ios/app/music-spectrograph/id432044946)

Visually reverse engineer sound and music in real-time with a live MIDI piano roll displaying pitch and frequency. Slow down or stop audio to analyze musical patterns, aiding in music transcription and learning.

**Highlights:** Real-time MIDI piano roll, Pitch and frequency visualization, Slow down and stop audio, Music transcription aid, Adjustable playback speed, Color-coded pitch graph

**Features:** Vision Pro support

**In-app purchases:** none


### HarmonyWiz

[App page](https://appshunter.io/ios/app/harmonywiz/id629564112)

This app generates multi-part harmony from a single musical line, offering harmonic analysis and figured bass notation. It includes editing tools, preset sound ensembles, and supports various harmonic styles. It's suitable for all ages, from beginners to professionals.

**Highlights:** Multi-part harmony generation, Harmonic analysis and figured bass, Expert editing tools, Multiple harmonic styles, Built-in and MIDI keyboards, SoundCloud sharing

**Features:** Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Synth pack 1 | $0.99 | one-time |
| Guitar pack | $0.99 | one-time |
| Synth pack 2 | $0.99 | one-time |
| Wizdom acoustic 1 | $0.99 | one-time |
| Wizdom acoustic 2 | $0.99 | one-time |


## Frequently asked questions

### Is Music Spectrograph free?

Music Spectrograph costs $9.99, with no in-app purchases.

### Is HarmonyWiz free?

HarmonyWiz costs $9.99, and also offers in-app purchases.

### Which has better reviews, Music Spectrograph or HarmonyWiz?

HarmonyWiz is rated higher. Music Spectrograph averages 2.5 out of 5 from 4 ratings, while HarmonyWiz averages 4.5 from 4 ratings.

### Do Music Spectrograph or HarmonyWiz have ads?

Neither Music Spectrograph nor HarmonyWiz shows ads.

### Which is updated more often, Music Spectrograph or HarmonyWiz?

Music Spectrograph ships an update every 6 weeks, and HarmonyWiz every 3 months. Most recently, Music Spectrograph was updated on September 21, 2026 and HarmonyWiz on October 15, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*