RegExpress

RegExpress

Powerful Regex Testing Tool

0 ratings
1 review
#200 in top-grossing Developer Tools
πŸ”§ Utilities
πŸ› οΈ Developer Tools
Free
In-App Purchases

Details

  • Released
  • Updated
  • May 1, 2025
  • August 1, 2026

Features

RegExpress screenshot #1 for iPhone
RegExpress screenshot #2 for iPhone
RegExpress screenshot #3 for iPhone
RegExpress screenshot #4 for iPhone
RegExpress screenshot #5 for iPhone
RegExpress screenshot #6 for iPhone
RegExpress screenshot #7 for iPhone
RegExpress screenshot #8 for iPhone
RegExpress screenshot #9 for iPhone
RegExpress screenshot #10 for iPhone
iphone
ipad
πŸ–ΌοΈGet Icon
Iconsβ†˜οΈŽ

About

This app is a comprehensive tool for building, testing, and debugging regular expressions. It offers real-time matching, syntax highlighting, and supports multiple regex flavors. Learn and practice with tutorials, puzzles, and challenges.

βœ“Real-time regex matching
βœ“Support for 5 regex flavors
βœ“Step-by-step regex debugger
βœ“Pattern Library for saving patterns
βœ“Learning tutorials and daily puzzles
βœ“iCloud sync for Pro users
βœ“Universal app for iOS and Mac
Show original description

What's New in RegExpress

8

August 1, 2026

Version 8 is a major upgrade built around safer execution, flavor accuracy, and a faster professional workflow. Meet the new Focus Editor, a multiline workspace with a persistent token dock, flavor-aware options, railroad diagrams, code snippets, and direct access to building and testing tools. Run expressions with five distinct engines: Swift Regex, Foundation (ICU), JavaScript/ECMAScript, Python Compatibility Mode, and native PCRE2. Options, examples, the cheat sheet, Pattern Builder, optimizer, comparisons, and diagrams now adapt to the selected flavor. Execution is more responsive and reliable, with automatic or manual runs, cancellation, clearer errors, match limits, and improved protection from expensive backtracking. Save complete .regexpress workspaces, reopen .regproj test projects, and keep patterns, options, text, replacements, tests, notes, and metadata together. Structured local storage and sync improvements make saved work more dependable. Test suites now include richer results, edge-case intelligence, performance limits, progress, cancellation, and pattern health details. Pattern comparison now includes flavor-aware match, compatibility, and performance differences. Generate Regex has been redesigned around plain-language requirements, positive and negative examples, strictness, portability, expected captures, previews, and refinement. Recommendations, optimization, examples, and automatic library collections have also been improved. New productivity features include the command palette, Spotlight search, App Shortcuts, Share Extension support, deep links, incremental replacement previews, and improved workspace sharing. Version 8 also introduces a clearer free tier. Core regex creation and testing remain free, with useful allowances for saved patterns, history, test cases, Generate Regex, and previews of advanced tools. RegExpress Pro remains a one-time purchase with no subscription. This release also includes redesigned Examples, keyboard and scrolling fixes, accessibility improvements, localization updates, and many reliability refinements throughout the app.

More
3

In-App Purchases

$4.99

RegExpress Pro

Unlock RegExpress Pro

Charts

Top Grossing

πŸ“‰Β 200-6

Developer Tools

This app dropped -6 positions in Developer Tools chart.

Last updated on August 7, 2026.

User reviews

The tutorial itself is unfinished and baffling

The app looks like it has really cool features but the text of the menus and reference material uses layouts that actually look incomplete or broken, making me doubt the reliability of every thing else, unfortunately.

Response from developer

Thank you for the feedback. I am sorry for the issues you experienced with the tutorial and layout. I am actively updating the tutorial and improving the interface so everything displays clearly and works as expected. Your comments help guide these fixes and they will be included in the next updates. If you have any specific examples or suggestions, please feel free to share them using the in app support link.

Developer apps

FAQ

What regex flavors does RegExpress support?

RegExpress supports five popular regex flavors: Swift, NSRegularExpression, JavaScript, Python, and PCRE2, offering broad compatibility for various development needs.

Can I save and organize my regex patterns with RegExpress?

Yes, RegExpress features a Pattern Library where you can save, organize, and even share your regex patterns, streamlining your workflow.

Does RegExpress offer learning resources for beginners?

Absolutely. RegExpress includes comprehensive learning tutorials and daily puzzles, including Regex Golf challenges, to help users of all levels master regular expressions.

Is RegExpress available on multiple Apple devices?

Yes, RegExpress is a universal app designed for iPhone, iPad, and Mac, ensuring a consistent experience across your Apple ecosystem.

Does RegExpress have ads?

No, RegExpress does not contain advertisements, providing an uninterrupted user experience for testing and learning.

What are the benefits of the Pro version of RegExpress?

The Pro version of RegExpress offers iCloud sync, allowing you to seamlessly synchronize your patterns and settings across all your devices.

How often is RegExpress updated?

RegExpress was last updated on April 4, 2026, with version 6.13, indicating regular maintenance and feature enhancements.

What is the age rating for RegExpress?

RegExpress has an age rating of 4+, making it suitable for a wide range of users, including younger learners and professionals.