webrios vs Regex Playground

webRios brings the power of R to your iPhone and iPad through webR, a WebAssembly distribution of R. Run R code directly on your device with no server connection required. NEARLY FULL R ENVIRONMENT Run R 4.5 locally using WebAssembly technology in a nearly full feature R environment. Your code executes entirely on your device, keeping your data private and secure. (Some R packages are not available.) INTERACTIVE CONSOLE Execute R code with instant feedback. Intelligent code completion powered by R's completion engine. Function signature hints while typing. Syntax highlighting for better readability. Command history with easy recall. Smart quote handling for mobile keyboards. HELP BROWSER Search R documentation from your device. Browse function help pages with formatted output. Quick access to recently viewed topics. Run code examples directly from help pages. POWERFUL CODE EDITOR Write and save R scripts with tabbed editing. Code completion with function, argument, and package suggestions. Code folding to collapse and expand sections. Line numbers and current line highlighting. R-specific keyboard with assignment arrow, pipe, and common operators. Run entire scripts, selected code, or the current line. Customizable keyboard shortcuts. Per-tab undo and redo. DATA VISUALIZATION Generate plots with standard R graphics. Browse plots in a scrollable gallery. Pin favorite plots to keep them. Export plots via the system share sheet. DATA TOOLS Import CSV files with a full-featured Data Import Wizard. Inspect data frame columns with summary statistics and charts. Filter and explore data interactively. PACKAGE MANAGEMENT Works with over 15,000 R packages compiled for WebAssembly. Install packages from the webR repository. Browse available packages. Manage installed packages. ENVIRONMENT INSPECTOR View all variables in your workspace. See variable types, classes, and sizes. Monitor your R session state. Preview data values. EXECUTION HISTORY Browse past commands with timestamps and results. Filter by source, success, or failure. Re-run previous commands with a tap. Export history as text or JSON. PROJECT WORKSPACES Per-project R workspaces keep your sessions separate. Automatic session persistence and working directory tracking. Restart R with unresponsive session detection and recovery. FILE MANAGEMENT Create and edit R scripts. Import data files. Integration with iOS Files app. Share files with other apps. SPOTLIGHT SEARCH Find your R scripts from the iOS home screen. Scripts are indexed with function names and package references. Tap a result to open it directly in the editor. IPAD OPTIMIZED Four-pane workspace layout. Console, editor, environment, and plots side by side. Inline help documentation browser. Full keyboard shortcut support with discoverability overlay. WORKS OFFLINE Once launched, webRios works completely offline. Your code and data never leave your device unless you explicitly share them. PERFECT FOR Learning R on the go. Quick data analysis. Statistical calculations. Code prototyping. Teaching and demonstrations. Built with webR, an open-source MIT-licensed project that compiles R to WebAssembly. Learn more at https://r-wasm.org. This app is not affiliated with the webR development team or Posit. Note: First launch requires a few seconds to initialize the R environment. Some computationally intensive operations may be slower than desktop R due to WebAssembly constraints. This environment is not able to support developing an R package or writing compiled code.

Regex Playground is a powerful yet intuitive tool designed for developers, data scientists, and anyone working with text patterns. Whether you're validating emails, parsing logs, or extracting data, test your regular expressions instantly with live syntax highlighting and detailed match analysis. KEY FEATURES Real-Time Pattern Matching - Type your regex and see matches highlighted instantly in your test text. No more guessing — know immediately if your pattern works. Visual Match Analysis - Tap any match to inspect capture groups, match ranges, and see whether you've achieved a full or partial match. Perfect for debugging complex patterns. Pattern Explanation Engine - New to regex? Toggle the explanation view to see a color-coded breakdown of every token in your pattern. Learn what ^, \d, (?:...), and lookahead assertions actually do. Built-In Pattern Library - Jump-start your workflow with 15+ production-ready patterns covering emails, phone numbers, URLs, dates, credit cards, passwords, IP addresses, and HTML tags. Save your own custom patterns and organize them by category. Regex Flags Support - Enable Case Insensitive, Multiline, Dot All, and Extended modes to test patterns against real-world text formats. Test Case Suite - Save reusable test cases with expected outcomes. Run your pattern against your entire test suite and see pass/fail results with a visual progress indicator. Essential for regression testing regex patterns. Smart History - Your recent patterns are automatically saved so you can iterate quickly without retyping. Favorite patterns you use daily. DESIGNED FOR DEVELOPERS - Clean, distraction-free interface optimized for focused work - Monospace fonts for pattern readability - Dark mode support - No account required — all data stored locally - Works offline completely WHO IT'S FOR - iOS/macOS developers parsing text data - Backend engineers validating API inputs - Data analysts cleaning datasets - Students learning regular expressions - QA engineers writing test validations Stop switching between browser tabs and IDEs. Build better regex patterns faster with Regex Playground.