# Spectrojam vs Ferromagnetic

The clearest difference is update cadence: Ferromagnetic at every 11 days against Spectrojam's every 3 months. Ferromagnetic also leads on review sentiment (80% vs 69%). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Spectrojam sells 1 one-off in-app purchase and Ferromagnetic sells 6 in-app purchases, starting at $2.49 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 3.9 for Spectrojam against 4.0 for Ferromagnetic. Both are backed by a comparable volume of ratings — 25 and 24 respectively. Written reviews are what separate them: 69% of Spectrojam's written reviews are positive against 80% of Ferromagnetic's.

Spectrojam ships an update every 3 months, Ferromagnetic every 11 days. The most recent releases landed on September 16, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Spectrojam | Ferromagnetic |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (25 ratings)](https://appshunter.io/ios/app/spectrojam/id1302916204/reviews) | **[4.0 (24 ratings)](https://appshunter.io/ios/app/ferromagnetic/id1546537151/reviews)** |
| Number of ratings | **25** | 24 |
| Positive reviews | 69.2% of reviews | **79.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 11 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 67 MB | 20 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Nonsequential Time Labs](https://appshunter.io/developer/1294961478) | [Daniel Eke](https://appshunter.io/developer/886776646) |

## What reviewers say

### Spectrojam

[App page](https://appshunter.io/ios/app/spectrojam/id1302916204)

This app transforms sounds from your microphone into dynamic colors and shapes on your screen. It visualizes the frequency composition of everyday noises and musical tunes, allowing you to see sound signatures and even translate them into musical notes.

**Highlights:** Real-time sound to color/shape visualization, Musical note display for pitch accuracy, Chord and harmony analysis, Adjustable gain for volume control, High-resolution premium visualizer, Color modulation effects

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $2.99 | one-time |


### Ferromagnetic

[App page](https://appshunter.io/ios/app/ferromagnetic/id1546537151)

Transform music into real-time visual art with dynamic audio-reactive effects. Enhance personal listening, create ambiance for gatherings, or perform live with captivating visuals that sync to every beat. Offers thousands of unique visual combinations for a fresh experience with every song.

**Highlights:** Real-time audio-reactive visuals, Multi-band frequency analysis, Automatic beat detection, Metal-powered rendering engine, Multi-layer compositing system, Customizable visual parameters, Thousands of unique visual combinations

**Features:** Family Sharing, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FM Visualizer | $2.49 | per month |
| FM Producer | $3.99 | per month |
| A generous tip | $0.99 | one-time |
| FM Visualizer One-TIme | $17.99 | one-time |
| FM Producer Upgrade | $39.99 | one-time |
| FM Producer One-Time | $59.99 | one-time |


## Frequently asked questions

### Is Spectrojam free?

Spectrojam is free to download, with in-app purchases available.

### Is Ferromagnetic free?

Ferromagnetic is free to download, with in-app purchases available.

### Which has better reviews, Spectrojam or Ferromagnetic?

Ferromagnetic is rated higher. Spectrojam averages 3.9 out of 5 from 25 ratings, while Ferromagnetic averages 4.0 from 24 ratings.

### Do Spectrojam or Ferromagnetic have ads?

Neither Spectrojam nor Ferromagnetic shows ads.

### Which is updated more often, Spectrojam or Ferromagnetic?

Spectrojam ships an update every 3 months, and Ferromagnetic every 11 days. Most recently, Spectrojam was updated on September 16, 2026 and Ferromagnetic on September 13, 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.*