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Patterns - The Regex App

By Nikolai Krill

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Patterns is a simple yet powerful tool for working with regular expressions. Build great patterns quickly and effortlessly with syntax coloring, and with matching and replacing occurring in real time.


- Regular expression syntax coloring makes it easy to see how your pattern is interpreted by the regex engine. No more confusion about what needs to be escaped.
- See matches and replacements in real time while you edit your pattern.
- Copy match and replacement code snippets of your pattern for quick use in a number of different programming languages.
- The built-in regular expression reference sheet helps you find the piece of regex syntax you need.

What's New in Version 1.1.2

- Highlighting of matching parentheses for capture groups in regex editor
- Bugfixes and improvements
- Fixes an issue where quotes and dashes are substituted in the text fields
- Support for macOS 10.12 Sierra
- Hover over a match to view the contents of capture groups
- Restoration of app state on quit and relaunch
- Bugfixes


Screenshot 1

Customer Reviews

Enjoyable Way Experiment & Learn

I’ve used regular expressions off and on for the past few decades - they are indispensable for certain tasks, and huge time savers in others. But I don’t use them constantly, which means I often need a quick refresher to get things working just right.
That’s where this nicely crafted app comes in. I find it a quick, and intuitive way to re-familiarize myself with the arcane workings of regex expressions.

My compliments to Nikolai Krill for creating this gem!

Lots of potential, but very aggravating

I got this app to assist with constructing Regex terms. While it holds a lot of promise, there are two critical flaws. 1) There’s no way to save your work. By itself, that’s not a big deal. It becomes a big deal when the app crashes for no apparent reason. I’ve had the thing crash twice in the past 15 minutes after I’m close to getting a term done. If I had hair to pull out, I would. I hope the developer has Crashlytics installed so he/she can fix whatever the problem is.

Love it!

I don’t do a lot of regular expressions, but when I do, this app helps me when I’m not getting the results I think I should be getting. Limited help, so if you know nothing about regular expressions you’ll probably need to supplement it, but the help that is there is perfect to remind me.

Patterns - The Regex App
View in Mac App Store
  • $1.99
  • Category: Developer Tools
  • Updated:
  • Version: 1.1.2
  • Size: 1.4 MB
  • Language: English
  • Seller:

Compatibility: OS X 10.6 or later, 64-bit processor

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