RegExpress 4+

The ultimate regular expression testing and learning app for iOS.


RegExpress transforms complex regular expressions into an intuitive, powerful tool for developers, students, and professionals. Whether debugging patterns, learning fundamentals, or managing a comprehensive pattern library, RegExpress delivers everything you need with native iOS performance.


What's New in v4.5:

- Performance Revolution: Lightning-fast regex testing with compilation caching that dramatically improves execution speed
- Enhanced Accessibility: Complete overhaul ensures perfect compatibility with VoiceOver, Switch Control, and other assistive technologies
- Quick Actions Grid: Redesigned home screen with intuitive grid layout for instant access to features
- Multi-Window iPad Support: Full multitasking capabilities with advanced keyboard shortcuts for power users
- Smart Auto-Save: Intelligent functionality that preserves patterns, test text, and session state automatically
- Improved Freemium: Expanded free tier with pro users enjoying advanced analytics and unlimited pattern storage


Core Features:

Real-Time Testing: Test patterns instantly with live syntax highlighting and match visualization. Results update as you type with zero delay.

Interactive Tutorials: Master regular expressions through comprehensive curriculum from basic concepts to advanced techniques. Each lesson includes hands-on exercises and real-world examples.

Pattern Library: Save, organize, and categorize patterns with folders, favorites, and smart search. Export collections in JSON, CSV, and plain text formats.

Debug Visualization: Step-by-step execution visualization breaks down the matching process in detail so you understand exactly how patterns work.

Syntax Highlighting: Color-coded pattern syntax makes complex expressions readable and helps identify errors before testing.

Advanced Tools: Built-in performance monitoring, AI-powered pattern suggestions, capture group management, search and replace with real-time preview, and complete pattern history tracking.



Universal iOS Experience:

Nativ Performance: Built entirely with native iOS frameworks for maximum performance and battery efficiency. No web views or cross-platform compromises.

Universal Design: Optimized for both iPhone and iPad with responsive layouts that adapt to any screen size or orientation.

Complete Offline Operation: All functionality works without internet connection including pattern testing and tutorials.

Dark Mode: Beautiful implementation that's easy on the eyes during late-night coding sessions.

Professional Features: Pattern optimization suggestions, batch testing capabilities, integrated syntax reference, and flexible export options for sharing with colleagues.

Learning System: Progressive difficulty levels, interactive exercises with immediate feedback, real-world examples from web development and data processing, plus comprehensive coverage of all major regex concepts.



RegExpress isn't just another regex tool - it's a complete learning and development environment designed specifically for iOS. Perfect for developers debugging patterns, students learning concepts, data analysts processing text, and anyone working with regular expressions professionally.



Download RegExpress today and discover why thousands of developers trust it for their regex needs.