# Processing & p5.js iCompiler vs Fabula for SwiftUI

The clearest difference is rating: Fabula for SwiftUI at 4.8 against Processing & p5.js iCompiler's 3.5. Fabula for SwiftUI also leads on review sentiment (98% vs 58%) and in-app purchases (none vs 5). Processing & p5.js iCompiler's advantage is iOS requirement (11.0 vs 15.0). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Processing & p5.js iCompiler sells 5 in-app purchases, starting at $3.49 per month. Fabula for SwiftUI asks for nothing beyond the download.

Fabula for SwiftUI holds the better App Store score, 4.8 against 3.5. Both are backed by a comparable volume of ratings — 80 and 123 respectively. Written reviews point the same way: 58% of Processing & p5.js iCompiler's written reviews are positive against 98% of Fabula for SwiftUI's.

Processing & p5.js iCompiler ships an update every 5 weeks, Fabula for SwiftUI fortnightly. The most recent releases landed on September 21, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Processing & p5.js iCompiler | Fabula for SwiftUI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (80 ratings)](https://appshunter.io/ios/app/processing-and-p5js-icompiler/id648955851/reviews) | **[4.8 (123 ratings)](https://appshunter.io/ios/app/fabula-for-swiftui/id1591155142/reviews)** |
| Number of ratings | 80 | **123** |
| Positive reviews | 58.0% of reviews | **97.6% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Fortnightly** |
| Monetization | Freemium | **Free** |
| Size | 33 MB | 22 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [riedel.wtf apps S.L.](https://appshunter.io/developer/517545753) | [Gyeong Seop No](https://appshunter.io/developer/1591142900) |

## What reviewers say

### Processing & p5.js iCompiler

[App page](https://appshunter.io/ios/app/processing-and-p5js-icompiler/id648955851)

Develop and compile Processing and p5.js code directly on your mobile device. Export your creations as standalone apps for offline use. Ideal for students and educators learning creative coding.

**Highlights:** Compose and compile code on mobile, Export projects as home screen apps, Offline app usage, Code highlighting and formatting, 3D sketches and games support, Error highlighting (Pro feature)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Processing Pro (Monthly) | $3.49 | per month |
| Processing Pro (Annual) | $9.99 | per year |
| Processing for iOS Tip | $4.99 | one-time |
| Processing Pro Lifetime Unlock | $25.99 | one-time |
| Processing for iOS Tip | $99.99 | one-time |

**What reviewers like**

- ✅ Works offline without internet connection
- 👍 Free app with no mandatory payment
- 🎨 Good for quick creative coding and sketches
- 📱 Portable Processing development on mobile
- ⚡ Relatively fast performance for mobile IDE

**What reviewers complain about**

- 🚫 Compiler errors hidden behind paywall
- 🐛 Data loss and code deletion issues
- ❌ No error messages or debugging output
- 📝 Poor syntax highlighting (highlights wrong keywords)
- ⌨️ No auto-indentation or code formatting

**Reported bugs**

- Code reverts to earlier versions after app sleep
- Changes lost when phone falls asleep
- Functions with parameters cause black screen
- StringList data type not recognized
- Boolean highlighting shows 'bool' instead of full word

**Requested features**

- Free basic error messages for all users
- Undo/redo functionality
- Project renaming capability
- Project duplication feature
- Robust auto-save and backup system


### Fabula for SwiftUI

[App page](https://appshunter.io/ios/app/fabula-for-swiftui/id1591155142)

Explore narrative construction and code organization using fabula and syuzhet concepts. This app serves as a personal project to learn SwiftUI, offering code collections and fostering developer community interaction. It aims to help users understand SwiftUI's declarative approach for cross-platform development.

**Highlights:** Narrative construction concepts (fabula & syuzhet), SwiftUI code collections, Declarative UI development learning, Cross-platform development (iOS, macOS, watchOS, tvOS), Developer community sharing, Regular code updates

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Processing & p5.js iCompiler free?

Processing & p5.js iCompiler is free to download, with in-app purchases available.

### Is Fabula for SwiftUI free?

Fabula for SwiftUI is free to download, with no in-app purchases.

### Which has better reviews, Processing & p5.js iCompiler or Fabula for SwiftUI?

Fabula for SwiftUI is rated higher. Processing & p5.js iCompiler averages 3.5 out of 5 from 80 ratings, while Fabula for SwiftUI averages 4.8 from 123 ratings.

### Do Processing & p5.js iCompiler or Fabula for SwiftUI have ads?

Neither Processing & p5.js iCompiler nor Fabula for SwiftUI shows ads.

### Which is updated more often, Processing & p5.js iCompiler or Fabula for SwiftUI?

Processing & p5.js iCompiler ships an update every 5 weeks, and Fabula for SwiftUI fortnightly. Most recently, Processing & p5.js iCompiler was updated on September 21, 2026 and Fabula for SwiftUI on September 24, 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.*