# Neon Engine vs Side B

The clearest difference is in-app purchases: Neon Engine at none against Side B's 3. Side B's advantage is update cadence (daily vs every 5 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Side B sells 3 one-off in-app purchases. Neon Engine asks for nothing beyond the download.

Neon Engine ships an update every 5 months, Side B daily. Both last shipped on November 13, 2026.

## The numbers

| Metric | Neon Engine | Side B |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Daily** |
| Size | 3 MB | 6 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [JUNGYUN JO](https://appshunter.io/developer/1597055392) | [Alberto Gragera](https://appshunter.io/developer/1876359320) |

## What reviewers say

### Neon Engine

[App page](https://appshunter.io/ios/app/neon-engine/id6758552019)

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

**In-app purchases:** none


### Side B

[App page](https://appshunter.io/ios/app/side-b-music-player/id6823536374)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small tip | $1.99 | one-time |
| Medium tip | $3.99 | one-time |
| Large tip | $8.99 | one-time |


## Frequently asked questions

### Is Neon Engine free?

Neon Engine is free to download, with no in-app purchases.

### Is Side B free?

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

### Do Neon Engine or Side B have ads?

Neither Neon Engine nor Side B shows ads.

### Which is updated more often, Neon Engine or Side B?

Neon Engine ships an update every 5 months, and Side B daily. Most recently, Neon Engine was updated on November 13, 2026 and Side B on November 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.*