# Processing & p5.js iCompiler vs Stray Scanner

The clearest difference is rating: Stray Scanner at 5.0 against Processing & p5.js iCompiler's 3.6. Stray Scanner also leads on in-app purchases (none vs 5) and review sentiment (75% vs 58%). Processing & p5.js iCompiler's advantage is update cadence (every 2 months vs every 6 months) and ratings volume (84 vs 5). On price and ads 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. Stray Scanner asks for nothing beyond the download.

Stray Scanner holds the better App Store score, 5.0 against 3.6. That said, the two scores are not equally well evidenced: Processing & p5.js iCompiler has 84 ratings behind it against 5, 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 75% of Stray Scanner's.

Processing & p5.js iCompiler ships an update every 2 months, Stray Scanner every 6 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Processing & p5.js iCompiler | Stray Scanner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.6 (84 ratings)](https://appshunter.io/ios/app/processing-and-p5js-icompiler/id648955851/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/stray-scanner/id1557051662/reviews)** |
| Number of ratings | **84** | 5 |
| Positive reviews | 58.0% of reviews | **75.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 6 months |
| Monetization | Freemium | **Free** |
| Size | 10 MB | 1 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [riedel.wtf apps S.L.](https://appshunter.io/developer/517545753) | [Kenneth Blomqvist](https://appshunter.io/developer/1557051664) |

## 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


### Stray Scanner

[App page](https://appshunter.io/ios/app/stray-scanner/id1557051662)

Capture color, depth, and IMU data using your device's LiDAR sensor. Export these datasets to your computer for machine learning and dense mapping projects. Streamline the process of collecting RGB-D data without complex calibration.

**Highlights:** Record color images, Capture depth frames, Export IMU measurements, Estimate camera position, Access camera calibration matrix, Transfer datasets to desktop

**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 Stray Scanner free?

Stray Scanner is free to download, with no in-app purchases.

### Which has better reviews, Processing & p5.js iCompiler or Stray Scanner?

Stray Scanner is rated higher. Processing & p5.js iCompiler averages 3.6 out of 5 from 84 ratings, while Stray Scanner averages 5.0 from 5 ratings.

### Do Processing & p5.js iCompiler or Stray Scanner have ads?

Neither Processing & p5.js iCompiler nor Stray Scanner shows ads.

### Which is updated more often, Processing & p5.js iCompiler or Stray Scanner?

Processing & p5.js iCompiler ships an update every 2 months, and Stray Scanner every 6 months. Most recently, Processing & p5.js iCompiler was updated on November 1, 2026 and Stray Scanner on November 3, 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.*