# Spectrojam vs MP3 Flash

The clearest difference is rating: MP3 Flash at 5.0 against Spectrojam's 3.9. MP3 Flash also leads on in-app purchases (none vs 1) and review sentiment (100% vs 69%). Spectrojam's advantage is ads (none vs shown) and ratings volume (25 vs 2). On price and device support there is nothing between them.

Both are free to download. Spectrojam sells 1 one-off in-app purchase. MP3 Flash asks for nothing beyond the download.

MP3 Flash holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: Spectrojam has 25 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 69% of Spectrojam's written reviews are positive against 100% of MP3 Flash's.

Spectrojam ships an update every 3 months, MP3 Flash every 2 days. The most recent releases landed on October 20, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Spectrojam | MP3 Flash |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (25 ratings)](https://appshunter.io/ios/app/spectrojam/id1302916204/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/mp3-flash-music-strobe-light/id1522253201/reviews)** |
| Number of ratings | **25** | 2 |
| Positive reviews | 69.2% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 2 days** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 67 MB | 7 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nonsequential Time Labs](https://appshunter.io/developer/1294961478) | [Tran Dinh Hung](https://appshunter.io/developer/1475879763) |

## 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 |


### MP3 Flash

[App page](https://appshunter.io/ios/app/mp3-flash-music-strobe-light/id1522253201)

This app synchronizes your device's flashlight with the beat of your music, creating a dynamic light show for parties. It also functions as a music player, allowing you to manage local songs, create playlists, and enjoy visual effects.

**Highlights:** Music player, Synchronized flashlight strobe, Visual effects, Playlist management, Analyzes song beats

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

**In-app purchases:** none


## Frequently asked questions

### Is Spectrojam free?

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

### Is MP3 Flash free?

MP3 Flash is free to download, with no in-app purchases.

### Which has better reviews, Spectrojam or MP3 Flash?

MP3 Flash is rated higher. Spectrojam averages 3.9 out of 5 from 25 ratings, while MP3 Flash averages 5.0 from 2 ratings.

### Do Spectrojam or MP3 Flash have ads?

MP3 Flash shows ads; Spectrojam does not.

### Which is updated more often, Spectrojam or MP3 Flash?

Spectrojam ships an update every 3 months, and MP3 Flash every 2 days. Most recently, Spectrojam was updated on October 20, 2026 and MP3 Flash on October 2, 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.*