Regex Playground vs CodePad

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.

Write and run Python – right on your iPhone or iPad, with no ads and no subscriptions. CodePad is a full Python code editor and IDE built for iOS and iPadOS. It runs a real embedded Python interpreter directly on your device – no server or internet connection required. Your code executes locally, instantly, and works even offline. NO ADS. NO SUBSCRIPTIONS. • All features are available • No ads • No subscription required • No account required • Run Python locally and offline CODE WITH A REAL EDITOR • Full Python syntax highlighting • Line numbers, code folding, and current-line highlighting • Auto-indent and auto-close brackets • Line wrap and adjustable tab width • Find and replace across your file • Multiple editor themes and fonts with adjustable font size RUN PYTHON ON YOUR DEVICE • Execute Python scripts directly on your iPhone or iPad • No server round-trip – your code runs locally • Watch output appear in a dedicated console as your script runs • Send input to a running script interactively • Built-in timeout protection for runaway loops • Full Python tracebacks to help find and fix errors fast ORGANIZE YOUR WORK • Create and manage multiple projects, files, and folders • Import existing Python files or whole projects (.zip) • Export projects to share or back up • Deleted items move to Recently Deleted first NEVER LOSE YOUR PROGRESS • Automatic version history for every file • Compare earlier versions against your current code, line by line • Restore an older version in a single tap BUILT FOR iPHONE & iPAD • Dedicated Light and Dark editor themes • Keyboard accessory bar built specifically for writing code • Interview Mode for a clean, distraction-free workspace • Native experience on both iPhone and iPad Whether you're learning Python, prototyping an idea, preparing for an interview, or just need to run a quick script without opening a laptop, CodePad gives you a real Python environment anywhere. Write Python. Run it offline. Code anywhere. Python is a trademark of the Python Software Foundation. CodePad is not affiliated with or endorsed by the Python Software Foundation.