Comparison

Processing & p5.js iCompiler vs Code Editor for HTML CSS JS

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Processing & p5.js iCompiler

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
Read full description

Compose and compile your Processing & p5.js projects right on your phone or iPad, wherever your are! Export your Processing projects as App on your home screen: 1. Select an App icon for your Processing project. 2. Add it to your home screen. You can now use the app offline, just like any other app! This app is already being used in high schools and universities to teach and learn Processing & p5.js. Your code is highlighted and formatted for excellent reading-comfort. Processing Pro allows you to see which parts of your code are causing problems. 3D sketches and games are supported. This is not an official app by processing.org or p5.js Available subscription: Processing Pro, offers additional functionalities, such as exporting your sketches as apps. Trailer Music: Circle of Alchemists Privacy and Terms: http://processing-app.org/terms/

About

Code Editor for HTML CSS JS

This application provides a robust code editor for web development, offering features like syntax highlighting and unlimited projects. Users can easily share their creations with others and host their websites instantly.

Highlights
  • Syntax highlighting
  • Custom URLs
  • Unlimited projects
  • One-click project sharing
  • Instant website hosting
Features
Read full description

Prisma is the best code editor for web developers and people learning web development. Get syntax highlighting, custom URLs, and unlimited projects. Share your projects with your friends in one click.

Screenshots

Processing & p5.js iCompiler4 screens
Code Editor for HTML CSS JS3 screens

Verdict

The call

The clearest difference is rating: Processing & p5.js iCompiler at 3.5 against Code Editor for HTML CSS JS's 1.9. Processing & p5.js iCompiler also leads on review sentiment (58% vs 33%) and ratings volume (80 vs 10). Code Editor for HTML CSS JS's advantage is update cadence (every 3 weeks vs every 2 months) and chart position (#192 vs unranked). On price, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Processing & p5.js iCompiler sells 5 in-app purchases, starting at $3.49 per month and Code Editor for HTML CSS JS sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Processing & p5.js iCompiler holds the better App Store score, 3.5 against 1.9. That said, the two scores are not equally well evidenced: Processing & p5.js iCompiler has 80 ratings behind it against 10, 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 33% of Code Editor for HTML CSS JS's.

UpkeepUpdate frequency

Processing & p5.js iCompiler ships an update every 2 months, Code Editor for HTML CSS JS every 3 weeks. The most recent releases landed on October 16, 2026 and October 17, 2026 respectively.

Scorecard6 real differences · 5 level
Processing & p5.js iCompiler versus Code Editor for HTML CSS JS: the parameters behind the verdict, then further details
ParameterProcessing & p5.js iCompilerCode Editor for HTML CSS JS
PriceFreeFree
Rating3.5 (80 ratings) — better1.9 (10 ratings)
Positive reviews58.0% of reviews — better33.3% of reviews
Number of ratings80 — better10
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
Best chart rank—#192 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size10 MB3 MB
Age rating4+4+
Developerriedel.wtf apps S.L.Sajed Nahian

Customer experience

Processing & p5.js iCompiler

All ratings80 ratings
Positive58.8%
Neutral8.8%
Negative32.5%
Written reviews162 reviews
Positive58.0%
Neutral12.3%
Negative29.6%

Code Editor for HTML CSS JS

All ratings10 ratings
Positive20.0%
Neutral0.0%
Negative80.0%
Written reviews33 reviews
Positive33.3%
Neutral3.0%
Negative63.6%

Bugs and requests

Processing & p5.js iCompiler

Reported bugs

20 issues
  • 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
Show 15 more
  • Else statements break code formatting
  • Try/catch blocks don't work properly
  • Cursor position jumps unexpectedly while typing
  • Screen scrolls to bottom when typing mid-file
  • Swipe-to-go-back gesture interferes with drawing
  • mouseClicked() event fires multiple times per click
  • Import folder feature doesn't work
  • Cannot use numbers/underscores in project names
  • blendMode() and other complex functions fail
  • Silent failures with blank screen output
  • Inconsistent error highlighting
  • Typing lag with large projects (700+ lines)
  • Example project code disappeared after updates
  • Dialog boxes appear in German
  • About and new project buttons invisible in light mode

Requested features

20 requests
  • Free basic error messages for all users
  • Undo/redo functionality
  • Project renaming capability
  • Project duplication feature
  • Robust auto-save and backup system
Show 15 more
  • GIF animation support for sprites
  • Library import and management system
  • Landscape mode support
  • Find and replace functionality
  • Console output for debugging
  • Settings/preferences menu
  • File organization with folders
  • Project thumbnails
  • Built-in documentation/reference
  • Processing to p5.js conversion tool
  • Ability to import entire project folders
  • Font size customization
  • Fullscreen mode for screenshots
  • PVector class support
  • Pixel density optimization for Retina displays

Code Editor for HTML CSS JS

Not enough reviews yet to summarise bugs or requests.

In-app purchases

5 purchases

Processing & p5.js iCompiler

Subscriptions2
  • Processing Pro (Monthly)$3.491 Month
  • Processing Pro (Annual)$9.991 Year
One-time3
  • Processing for iOS Tip$4.99
  • Processing Pro Lifetime Unlock$25.99
  • Processing for iOS Tip$99.99
1 purchases

Code Editor for HTML CSS JS

One-time1
  • Code Editor Plus$2.99

Questions

Is Processing & p5.js iCompiler free?
Processing & p5.js iCompiler is free to download, with in-app purchases available.
Is Code Editor for HTML CSS JS free?
Code Editor for HTML CSS JS is free to download, with in-app purchases available.
Which has better reviews, Processing & p5.js iCompiler or Code Editor for HTML CSS JS?
Processing & p5.js iCompiler is rated higher. Processing & p5.js iCompiler averages 3.5 out of 5 from 80 ratings, while Code Editor for HTML CSS JS averages 1.9 from 10 ratings.
Do Processing & p5.js iCompiler or Code Editor for HTML CSS JS have ads?
Neither Processing & p5.js iCompiler nor Code Editor for HTML CSS JS shows ads.
Which is updated more often, Processing & p5.js iCompiler or Code Editor for HTML CSS JS?
Processing & p5.js iCompiler ships an update every 2 months, and Code Editor for HTML CSS JS every 3 weeks. Most recently, Processing & p5.js iCompiler was updated on October 16, 2026 and Code Editor for HTML CSS JS on October 17, 2026.

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