# Ferromagnetic vs Light DJ

The clearest difference is price: Ferromagnetic at Free against Light DJ's $2.99. Ferromagnetic also leads on update cadence (weekly vs every 5 weeks) and ratings volume (26 vs 1). Light DJ's advantage is rating (5.0 vs 4.1) and in-app purchases (none vs 6). On ads, device support and iOS requirement there is nothing between them.

Ferromagnetic is free to download; Light DJ costs $2.99 up front. Ferromagnetic sells 6 in-app purchases, starting at $2.49 per month. Light DJ asks for nothing beyond the download.

Light DJ holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: Ferromagnetic has 26 ratings behind it against 1, so its average is the more settled of the two.

Ferromagnetic ships an update weekly, Light DJ every 5 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Ferromagnetic | Light DJ |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | [4.1 (26 ratings)](https://appshunter.io/ios/app/ferromagnetic/id1546537151/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/light-dj-visualizer-only/id6446652301/reviews)** |
| Number of ratings | **26** | 1 |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 5 weeks |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 23 MB | 59 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Eke](https://appshunter.io/developer/886776646) | [NRTHRNLIGHTS, LLC](https://appshunter.io/developer/921394788) |

## What reviewers say

### 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 |

**What reviewers like**

- ✨ Beautiful and classic visuals
- 🎶 Great music synchronization
- 💡 Highly customizable effects
- 💰 Excellent value for money (especially Pro/Lifetime)
- 🚀 Fast and responsive performance

**What reviewers complain about**

- 🐛 Song titles don't update
- 🐛 Custom image saving bug (fixed)
- 🐛 Blurry logo import
- 🐛 Crashing on launch
- 🐛 Poorly implemented controls (MacOS)

**Reported bugs**

- Song titles don’t update
- Custom image wasn’t saving in presets (reported fixed)
- Logo makes imported images blurry
- App crashes on launch
- Poorly implemented controls (MacOS)

**Requested features**

- Add a 'go back' button for controls
- Add Airplay mirroring or tvOS app
- More options in visualizer types
- Configurable presets for cycling settings
- Ability to stream to TV without a cable


### Light DJ

[App page](https://appshunter.io/ios/app/light-dj-visualizer-only/id6446652301)

Synchronize your smart lights with music to create dynamic visual experiences. Choose from various effects and color palettes that react to audio input, enhancing parties or everyday listening.

**Highlights:** Sound-reactive visual effects, Customizable color palettes, Automatic color selection based on music, Mellow and active effect modes, Nanoleaf-specific effects, Hue Entertainment area support, Multi-bridge support

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

**In-app purchases:** none


## Frequently asked questions

### Is Ferromagnetic free?

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

### Is Light DJ free?

Light DJ costs $2.99, with no in-app purchases.

### Which has better reviews, Ferromagnetic or Light DJ?

Light DJ is rated higher. Ferromagnetic averages 4.1 out of 5 from 26 ratings, while Light DJ averages 5.0 from 1 ratings.

### Do Ferromagnetic or Light DJ have ads?

Neither Ferromagnetic nor Light DJ shows ads.

### Which is updated more often, Ferromagnetic or Light DJ?

Ferromagnetic ships an update weekly, and Light DJ every 5 weeks. Most recently, Ferromagnetic was updated on October 24, 2026 and Light DJ on October 25, 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.*