Comparison

Processing & p5.js iCompiler vs Regex Lab +

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

Regex Lab +

Features
Read full description

Regex Lab is the fastest way to build, test, and understand regular expressions on iPhone and iPad. Whether you're a seasoned developer hunting down a tricky pattern or a student learning regex for the first time, Regex Lab turns every keystroke into instant, color-coded feedback so you can see exactly what your pattern matches — and why. KEY FEATURES • LIVE TESTER — Type your pattern and test string side-by-side. Matches highlight in real time with color-coded backgrounds, plus full capture-group inspection for every match. Jump between matches with prev/next navigation. • PATTERN EXPLAINER — Tap "Explain" and Regex Lab breaks your pattern down token by token. Anchors, quantifiers, character classes, groups, lookaround, escape sequences, and backreferences are each annotated with a plain-English description. • REPLACE TOOL — Build search-and-replace expressions with full $0, $1, $2… capture-group references. See input and output side-by-side with a live replacement counter, plus one-tap copy of the result. • SNIPPETS LIBRARY — Save patterns with names, notes, categories, and favorites. Search by name or pattern, filter by category, swipe to copy or delete, and load any snippet straight into the tester. Long-press for a quick-action menu. • BUILT-IN TEMPLATES — Twelve battle-tested patterns ready to use: email addresses, HTTP/HTTPS URLs, IPv4 addresses, US phone numbers, ISO 8601 dates, credit cards, hex colors, HTML tags, whitespace, whole words, numbers, and URL slugs. • REGEX CHEATSHEET — A searchable, categorized reference for anchors, quantifiers, character classes, groups, lookaround, special characters, and flags. Every symbol is tap-to-copy. • FLAGS & OPTIONS — Toggle case-insensitive (i), multiline (m), dot-matches-newlines (s), and extended syntax (x) and watch your matches update instantly. • POWERED BY NSREGULAREXPRESSION — Built on Apple's native engine, so what you test in Regex Lab behaves identically in your Swift, Objective-C, and Foundation code. DESIGNED FOR iOS • Native SwiftUI experience with full Dark Mode support • Adaptive layouts for iPhone and iPad • Monospaced typography tuned for code • 100% offline — no accounts, no analytics, no tracking Whether you're parsing log files, validating user input, writing migrations, building a scraper, or just trying to remember what \b does — Regex Lab keeps your regex toolbox in your pocket. Download Regex Lab today and write your next regular expression with confidence. Thank you for your support. Please visit nitrio.com for more apps for your iOS devices.

Screenshots

Processing & p5.js iCompiler4 screens
Regex Lab +4 screens

Verdict

The call

The clearest difference is price: Processing & p5.js iCompiler at Free against Regex Lab +'s $2.99. Processing & p5.js iCompiler also leads on iOS requirement (15.0 vs 17.6). Regex Lab +'s advantage is in-app purchases (none vs 5). On ads and device support 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

Processing & p5.js iCompiler is free to download; Regex Lab + costs $2.99 up front. Processing & p5.js iCompiler sells 5 in-app purchases, starting at $3.49 per month. Regex Lab + asks for nothing beyond the download.

Scorecard3 real differences · 7 level
Processing & p5.js iCompiler versus Regex Lab +: the parameters behind the verdict, then further details
ParameterProcessing & p5.js iCompilerRegex Lab +
PriceFree — better$2.99
Rating3.5 (82 ratings) — better—
Positive reviews58.0% of reviews—
Number of ratings82 — better—
Update frequencyEvery 2 months—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.6
Further details — not scored
Size10 MB3 MB
Age rating4+4+
Developerriedel.wtf apps S.L.Nitrio

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

Regex Lab +

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
None

Regex Lab +

No in-app purchases

Questions

Is Processing & p5.js iCompiler free?
Processing & p5.js iCompiler is free to download, with in-app purchases available.
Is Regex Lab + free?
Regex Lab + costs $2.99, with no in-app purchases.
Do Processing & p5.js iCompiler or Regex Lab + have ads?
Neither Processing & p5.js iCompiler nor Regex Lab + shows ads.

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