# Processing & p5.js iCompiler vs HapticKit

The clearest difference is price: Processing & p5.js iCompiler at Free against HapticKit's $1.99. Processing & p5.js iCompiler also leads on update cadence (every 2 months vs every 9 months) and ratings volume (84 vs 8). HapticKit's advantage is rating (4.8 vs 3.6) and review sentiment (100% vs 58%). On ads, device support and iOS requirement there is nothing between them.

Processing & p5.js iCompiler is free to download; HapticKit costs $1.99 up front. Processing & p5.js iCompiler sells 5 in-app purchases, starting at $3.49 per month. HapticKit asks for nothing beyond the download.

HapticKit holds the better App Store score, 4.8 against 3.6. That said, the two scores are not equally well evidenced: Processing & p5.js iCompiler has 84 ratings behind it against 8, 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 100% of HapticKit's.

Processing & p5.js iCompiler ships an update every 2 months, HapticKit every 9 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Processing & p5.js iCompiler | HapticKit |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [3.6 (84 ratings)](https://appshunter.io/ios/app/processing-and-p5js-icompiler/id648955851/reviews) | **[4.8 (8 ratings)](https://appshunter.io/ios/app/haptickit/id1563487692/reviews)** |
| Number of ratings | **84** | 8 |
| Positive reviews | 58.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 9 months |
| Monetization | **Freemium** | Paid |
| Size | 10 MB | 1 MB |
| Requires iOS | 15.0 | **14.1** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [riedel.wtf apps S.L.](https://appshunter.io/developer/517545753) | [Chunxia Li](https://appshunter.io/developer/1561473388) |

## 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


### HapticKit

[App page](https://appshunter.io/ios/app/haptickit/id1563487692)

This tool allows iOS developers to test, learn about, and implement built-in haptic feedback on iPhones. Developers can experiment with various haptics and instantly view or copy the corresponding Swift code.

**Highlights:** Test all built-in iPhone haptic feedbacks, Copy and share Swift code for haptics, Dark mode support, No ads or account required, Supports latest iOS versions

**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 HapticKit free?

HapticKit costs $1.99, with no in-app purchases.

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

HapticKit is rated higher. Processing & p5.js iCompiler averages 3.6 out of 5 from 84 ratings, while HapticKit averages 4.8 from 8 ratings.

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

Neither Processing & p5.js iCompiler nor HapticKit shows ads.

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

Processing & p5.js iCompiler ships an update every 2 months, and HapticKit every 9 months. Most recently, Processing & p5.js iCompiler was updated on November 1, 2026 and HapticKit 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.*