# SJ vs RasterFX

The clearest difference is price: RasterFX at Free against SJ's $0.49. RasterFX also leads on iOS requirement (17.0 vs 26.5). SJ's advantage is in-app purchases (none vs 1) and chart position (#192 vs unranked). On ads and device support there is nothing between them.

RasterFX is free to download; SJ costs $0.49 up front. RasterFX sells 1 one-off in-app purchase. SJ asks for nothing beyond the download.

## The numbers

| Metric | SJ | RasterFX |
| --- | --- | --- |
| Price | $0.49 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rasterfx-multi-effects/id6800385735/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | — |
| Monetization | — | Freemium |
| Best chart rank | **#192** | — |
| Size | 30 MB | 5 MB |
| Requires iOS | 26.5 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kouki Yoshimoto](https://appshunter.io/developer/1884780659) | [Chih Han Lin](https://appshunter.io/developer/1800248325) |

## What reviewers say

### SJ

[App page](https://appshunter.io/ios/app/sj-square-synthesizer/id6797394418)

**Currently charting:** #192 Top Paid · Music (US App Store)

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

**In-app purchases:** none


### RasterFX

[App page](https://appshunter.io/ios/app/rasterfx-multi-effects/id6800385735)

This app is a playable modular multi-effects processor for music creation. It allows users to build complex audio effect chains, modulate any control with various sources, and perform patches live. Visualizers provide real-time feedback on sound changes.

**Highlights:** Modular multi-effects processor, Build custom effect chains, Modulate any control, Live performance features, Real-time visualizers, Record and share audio

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RasterFX Pro | $3.99 | one-time |


## Frequently asked questions

### Is SJ free?

SJ costs $0.49, with no in-app purchases.

### Is RasterFX free?

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

### Do SJ or RasterFX have ads?

Neither SJ nor RasterFX shows ads.

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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.*