# Processing & p5.js iCompiler vs Clean OSC

The clearest difference is price: Processing & p5.js iCompiler at Free against Clean OSC's $4.99. Processing & p5.js iCompiler also leads on ratings volume (84 vs 4) and iOS requirement (15.0 vs 26.0). Clean OSC's advantage is in-app purchases (none vs 5) and review sentiment (78% vs 58%). On update cadence, ads and device support there is nothing between them.

Processing & p5.js iCompiler is free to download; Clean OSC costs $4.99 up front. Processing & p5.js iCompiler sells 5 in-app purchases, starting at $3.49 per month. Clean OSC asks for nothing beyond the download.

Clean OSC holds the better App Store score, 3.8 against 3.6. That said, the two scores are not equally well evidenced: Processing & p5.js iCompiler has 84 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 58% of Processing & p5.js iCompiler's written reviews are positive against 78% of Clean OSC's.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Processing & p5.js iCompiler | Clean OSC |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | [3.6 (84 ratings)](https://appshunter.io/ios/app/processing-and-p5js-icompiler/id648955851/reviews) | **[3.8 (4 ratings)](https://appshunter.io/ios/app/clean-osc/id1550516814/reviews)** |
| Number of ratings | **84** | 4 |
| Positive reviews | 58.0% of reviews | **77.8% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Freemium | **Free** |
| Size | 10 MB | 17 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, Mac, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [riedel.wtf apps S.L.](https://appshunter.io/developer/517545753) | [Anton Heestand](https://appshunter.io/developer/1235192207) |

## 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


### Clean OSC

[App page](https://appshunter.io/ios/app/clean-osc/id1550516814)

Create custom user interfaces with various controls like buttons, sliders, and toggles. Organize elements into groups and tabs. Send and receive Open Sound Control (OSC) messages via UDP or TCP, with support for Siri Shortcuts.

**Highlights:** Customizable UI elements (buttons, sliders, toggles), Organize UI into groups, tabs, and panels, Send and receive OSC messages, UDP and TCP support, Siri Shortcuts integration

**Features:** iPhone Duo 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 Clean OSC free?

Clean OSC costs $4.99, with no in-app purchases.

### Which has better reviews, Processing & p5.js iCompiler or Clean OSC?

Clean OSC is rated higher. Processing & p5.js iCompiler averages 3.6 out of 5 from 84 ratings, while Clean OSC averages 3.8 from 4 ratings.

### Do Processing & p5.js iCompiler or Clean OSC have ads?

Neither Processing & p5.js iCompiler nor Clean OSC shows ads.

### Which is updated more often, Processing & p5.js iCompiler or Clean OSC?

Processing & p5.js iCompiler ships an update every 2 months, and Clean OSC every 2 months. Most recently, Processing & p5.js iCompiler was updated on October 29, 2026 and Clean OSC on October 27, 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.*