# Processing & p5.js iCompiler

> #1 App for Processing & p5.js

Canonical page: [https://chrome-stats.com/d/id648955851](https://chrome-stats.com/d/id648955851)

## Overview

- **ID:** `id648955851`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** riedel.wtf apps S.L.
- **Category:** Developer Tools
- **Rating:** 3.50 / 5 (80 ratings)
- **Version:** 2.7
- **Last updated:** 2021-11-14
- **First published:** 2013-05-20
- **Size:** 33 MB
- **Data as of:** 2026-09-22
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/processing-p5-js-icompiler/id648955851)
- **Website:** [http://frogg.io](http://frogg.io/)
- **Privacy policy:** [https://riedel.wtf/privacy](https://riedel.wtf/privacy)

## Description

The Processing & p5.js iCompiler brings the Processing and p5.js workflow to mobile devices. Compose and compile sketches on your phone or iPad, export them as home-screen apps, and use them offline just like native apps.

It includes code highlighting, formatting, and debugging to help you read and fix errors. Supports 3D sketches and games, is used in education, and offers Processing Pro with extra export options. Not an official app by processing.org or p5.js.

## Rankings

- #163,081 — Overall
- #24 — process
- #36 — javascript
- #98 — developer tools

## Review summary

Users praise the app as a strong, mobile-friendly Processing/p5.js editor that runs offline and supports JavaScript coding on a phone. However, most reviews focus on flaws: persistent data loss with unclear saving, debugging feedback hidden behind payments, limited project import (no folders/multi-file support), no clear save function, and editor usability issues. Overall, it’s valuable for mobile coding but burdened by bugs and monetization hurdles that hinder reliable, long-term use.

### Pros

- Excellent for mobile coding with Processing/p5.js (powerful mobile IDE)
- Works offline without internet, enabling coding on the go
- Good fit for JavaScript coding on mobile and testing sketches
- Positive overall sentiment and appreciation for the app’s potential/end-user value

### Cons

- Frequent data loss and progress reverting; unreliable saving (no consistent save)
- Lack of accessible debugging/error messages; compiler output often hidden behind a paywall
- Limited project import capabilities (no folder import or multi-file project support)
- No obvious manual save button and overall poor file management/saving workflow
- Editor/IDE shortcomings (poor auto-indentation, problematic syntax highlighting, limited debugging)

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Source: [Chrome-Stats](https://chrome-stats.com/d/id648955851)