# Music Spectrograph vs Soniq Viewer

The clearest difference is review sentiment: Soniq Viewer at 100% against Music Spectrograph's 50%. Soniq Viewer also leads on rating (5.0 vs 2.5) and price ($1.99 vs $9.99). Music Spectrograph's advantage is update cadence (every 6 weeks vs every 20 months) and ratings volume (4 vs 1). On ads, in-app purchases, monetization model and device support there is nothing between them.

Music Spectrograph costs $9.99 and Soniq Viewer $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Soniq Viewer holds the better App Store score, 5.0 against 2.5. Both are backed by a comparable volume of ratings — 4 and 1 respectively. Written reviews point the same way: 50% of Music Spectrograph's written reviews are positive against 100% of Soniq Viewer's.

Music Spectrograph ships an update every 6 weeks, Soniq Viewer every 20 months. Both last shipped on November 1, 2026.

## The numbers

| Metric | Music Spectrograph | Soniq Viewer |
| --- | --- | --- |
| Price | $9.99 | **$1.99** |
| Rating | [2.5 (4 ratings)](https://appshunter.io/ios/app/music-spectrograph/id432044946/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/soniq-viewer/id448343005/reviews)** |
| Number of ratings | **4** | 1 |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 20 months |
| Monetization | Paid | Paid |
| Size | 1 MB | 1 MB |
| Requires iOS | **12.4** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HotPaw Productions](https://appshunter.io/developer/285074853) | [Yuji Koike](https://appshunter.io/developer/416095228) |

## 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


### Soniq Viewer

[App page](https://appshunter.io/ios/app/soniq-viewer/id448343005)

This app visualizes sound frequencies using your device's microphone. It displays the pitch of your voice and music on an equally-tempered musical scale, with adjustable input sensitivity and up to 60 frames per second.

**Highlights:** Frequency spectrum visualization, Microphone audio input, Pitch detection, Equally-tempered musical scale display, Adjustable input sensitivity, High frame rate display (up to 60 fps)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Music Spectrograph free?

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

### Is Soniq Viewer free?

Soniq Viewer costs $1.99, with no in-app purchases.

### Which has better reviews, Music Spectrograph or Soniq Viewer?

Soniq Viewer is rated higher. Music Spectrograph averages 2.5 out of 5 from 4 ratings, while Soniq Viewer averages 5.0 from 1 ratings.

### Do Music Spectrograph or Soniq Viewer have ads?

Neither Music Spectrograph nor Soniq Viewer shows ads.

### Which is updated more often, Music Spectrograph or Soniq Viewer?

Music Spectrograph ships an update every 6 weeks, and Soniq Viewer every 20 months. Most recently, Music Spectrograph was updated on November 1, 2026 and Soniq Viewer on November 1, 2026.

---

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